diff --git a/src/Orchard.Core.Tests/Orchard.Core.Tests.csproj b/src/Orchard.Core.Tests/Orchard.Core.Tests.csproj
index dc6799477..9f37a6add 100644
--- a/src/Orchard.Core.Tests/Orchard.Core.Tests.csproj
+++ b/src/Orchard.Core.Tests/Orchard.Core.Tests.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
@@ -10,7 +10,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.Core.Tests</RootNamespace>
     <AssemblyName>Orchard.Core.Tests</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.Profile/Orchard.Profile.csproj b/src/Orchard.Profile/Orchard.Profile.csproj
index fc05fd269..46dbbe056 100644
--- a/src/Orchard.Profile/Orchard.Profile.csproj
+++ b/src/Orchard.Profile/Orchard.Profile.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
@@ -10,7 +10,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.Profile</RootNamespace>
     <AssemblyName>Orchard.Profile</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.Profile/Tests/Profiling.feature.cs b/src/Orchard.Profile/Tests/Profiling.feature.cs
index 8c0f1b77f..c3c97248e 100644
--- a/src/Orchard.Profile/Tests/Profiling.feature.cs
+++ b/src/Orchard.Profile/Tests/Profiling.feature.cs
@@ -1,9 +1,9 @@
 // ------------------------------------------------------------------------------
 //  <auto-generated>
 //      This code was generated by SpecFlow (http://www.specflow.org/).
-//      SpecFlow Version:1.8.1.0
-//      SpecFlow Generator Version:1.8.0.0
-//      Runtime Version:4.0.30319.239
+//      SpecFlow Version:1.9.0.77
+//      SpecFlow Generator Version:1.9.0.0
+//      Runtime Version:4.0.30319.34014
 // 
 //      Changes to this file may cause incorrect behavior and will be lost if
 //      the code is regenerated.
@@ -16,7 +16,7 @@ namespace Orchard.Profile.Tests
     using TechTalk.SpecFlow;
     
     
-    [System.CodeDom.Compiler.GeneratedCodeAttribute("TechTalk.SpecFlow", "1.8.1.0")]
+    [System.CodeDom.Compiler.GeneratedCodeAttribute("TechTalk.SpecFlow", "1.9.0.77")]
     [System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
     [NUnit.Framework.TestFixtureAttribute()]
     [NUnit.Framework.DescriptionAttribute("Profiling")]
@@ -73,13 +73,13 @@ namespace Orchard.Profile.Tests
 #line 6
 this.ScenarioSetup(scenarioInfo);
 #line 7
-    testRunner.Given("I am logged in");
+    testRunner.Given("I am logged in", ((string)(null)), ((TechTalk.SpecFlow.Table)(null)), "Given ");
 #line 8
-    testRunner.When("I go to \"/admin\"");
+    testRunner.When("I go to \"/admin\"", ((string)(null)), ((TechTalk.SpecFlow.Table)(null)), "When ");
 #line 9
-    testRunner.When("I go to \"/blog0\"");
+    testRunner.When("I go to \"/blog0\"", ((string)(null)), ((TechTalk.SpecFlow.Table)(null)), "When ");
 #line 10
-    testRunner.When("I go to \"/\"");
+    testRunner.When("I go to \"/\"", ((string)(null)), ((TechTalk.SpecFlow.Table)(null)), "When ");
 #line hidden
             this.ScenarioCleanup();
         }
@@ -92,9 +92,9 @@ this.ScenarioSetup(scenarioInfo);
 #line 12
 this.ScenarioSetup(scenarioInfo);
 #line 13
-    testRunner.Given("I am logged in");
+    testRunner.Given("I am logged in", ((string)(null)), ((TechTalk.SpecFlow.Table)(null)), "Given ");
 #line 14
-    testRunner.When("I go to \"/admin\" 40 times");
+    testRunner.When("I go to \"/admin\" 40 times", ((string)(null)), ((TechTalk.SpecFlow.Table)(null)), "When ");
 #line hidden
             this.ScenarioCleanup();
         }
@@ -107,17 +107,17 @@ this.ScenarioSetup(scenarioInfo);
 #line 16
 this.ScenarioSetup(scenarioInfo);
 #line 17
-    testRunner.Given("I am logged in");
+    testRunner.Given("I am logged in", ((string)(null)), ((TechTalk.SpecFlow.Table)(null)), "Given ");
 #line 18
-    testRunner.When("I go to \"/blog0\" 10 times");
+    testRunner.When("I go to \"/blog0\" 10 times", ((string)(null)), ((TechTalk.SpecFlow.Table)(null)), "When ");
 #line 19
-    testRunner.When("I go to \"/blog1\" 10 times");
+    testRunner.When("I go to \"/blog1\" 10 times", ((string)(null)), ((TechTalk.SpecFlow.Table)(null)), "When ");
 #line 20
-    testRunner.When("I go to \"/blog2\" 10 times");
+    testRunner.When("I go to \"/blog2\" 10 times", ((string)(null)), ((TechTalk.SpecFlow.Table)(null)), "When ");
 #line 21
-    testRunner.When("I go to \"/blog3\" 10 times");
+    testRunner.When("I go to \"/blog3\" 10 times", ((string)(null)), ((TechTalk.SpecFlow.Table)(null)), "When ");
 #line 22
-    testRunner.When("I go to \"/blog4\" 10 times");
+    testRunner.When("I go to \"/blog4\" 10 times", ((string)(null)), ((TechTalk.SpecFlow.Table)(null)), "When ");
 #line hidden
             this.ScenarioCleanup();
         }
@@ -130,13 +130,13 @@ this.ScenarioSetup(scenarioInfo);
 #line 24
 this.ScenarioSetup(scenarioInfo);
 #line 26
-    testRunner.When("I go to \"/\" 10 times");
+    testRunner.When("I go to \"/\" 10 times", ((string)(null)), ((TechTalk.SpecFlow.Table)(null)), "When ");
 #line 27
-    testRunner.When("I go to \"/\" 10 times");
+    testRunner.When("I go to \"/\" 10 times", ((string)(null)), ((TechTalk.SpecFlow.Table)(null)), "When ");
 #line 28
-    testRunner.When("I go to \"/\" 10 times");
+    testRunner.When("I go to \"/\" 10 times", ((string)(null)), ((TechTalk.SpecFlow.Table)(null)), "When ");
 #line 29
-    testRunner.When("I go to \"/\" 10 times");
+    testRunner.When("I go to \"/\" 10 times", ((string)(null)), ((TechTalk.SpecFlow.Table)(null)), "When ");
 #line hidden
             this.ScenarioCleanup();
         }
diff --git a/src/Orchard.Specs/Admin.feature.cs b/src/Orchard.Specs/Admin.feature.cs
index 6caa15d41..af6c44c5f 100644
--- a/src/Orchard.Specs/Admin.feature.cs
+++ b/src/Orchard.Specs/Admin.feature.cs
@@ -3,7 +3,7 @@
 //      This code was generated by SpecFlow (http://www.specflow.org/).
 //      SpecFlow Version:1.9.0.77
 //      SpecFlow Generator Version:1.9.0.0
-//      Runtime Version:4.0.30319.33440
+//      Runtime Version:4.0.30319.34014
 // 
 //      Changes to this file may cause incorrect behavior and will be lost if
 //      the code is regenerated.
diff --git a/src/Orchard.Specs/App.Config b/src/Orchard.Specs/App.Config
index b7a7ef166..22c902af4 100644
--- a/src/Orchard.Specs/App.Config
+++ b/src/Orchard.Specs/App.Config
@@ -1,3 +1,3 @@
 <?xml version="1.0"?>
 <configuration>
-<startup><supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5"/></startup></configuration>
+<startup><supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5.1"/></startup></configuration>
diff --git a/src/Orchard.Specs/Autoroute.feature.cs b/src/Orchard.Specs/Autoroute.feature.cs
index 60bbdfe3b..9acc565f4 100644
--- a/src/Orchard.Specs/Autoroute.feature.cs
+++ b/src/Orchard.Specs/Autoroute.feature.cs
@@ -3,7 +3,7 @@
 //      This code was generated by SpecFlow (http://www.specflow.org/).
 //      SpecFlow Version:1.9.0.77
 //      SpecFlow Generator Version:1.9.0.0
-//      Runtime Version:4.0.30319.33440
+//      Runtime Version:4.0.30319.34014
 // 
 //      Changes to this file may cause incorrect behavior and will be lost if
 //      the code is regenerated.
diff --git a/src/Orchard.Specs/Blogs.feature.cs b/src/Orchard.Specs/Blogs.feature.cs
index c8bb8ba59..f420e7133 100644
--- a/src/Orchard.Specs/Blogs.feature.cs
+++ b/src/Orchard.Specs/Blogs.feature.cs
@@ -3,7 +3,7 @@
 //      This code was generated by SpecFlow (http://www.specflow.org/).
 //      SpecFlow Version:1.9.0.77
 //      SpecFlow Generator Version:1.9.0.0
-//      Runtime Version:4.0.30319.33440
+//      Runtime Version:4.0.30319.34014
 // 
 //      Changes to this file may cause incorrect behavior and will be lost if
 //      the code is regenerated.
diff --git a/src/Orchard.Specs/Boolean.feature.cs b/src/Orchard.Specs/Boolean.feature.cs
index c66b98251..6d95a877a 100644
--- a/src/Orchard.Specs/Boolean.feature.cs
+++ b/src/Orchard.Specs/Boolean.feature.cs
@@ -3,7 +3,7 @@
 //      This code was generated by SpecFlow (http://www.specflow.org/).
 //      SpecFlow Version:1.9.0.77
 //      SpecFlow Generator Version:1.9.0.0
-//      Runtime Version:4.0.30319.33440
+//      Runtime Version:4.0.30319.34014
 // 
 //      Changes to this file may cause incorrect behavior and will be lost if
 //      the code is regenerated.
diff --git a/src/Orchard.Specs/ContentRights.feature.cs b/src/Orchard.Specs/ContentRights.feature.cs
index 8b727ccc7..2a3cdae47 100644
--- a/src/Orchard.Specs/ContentRights.feature.cs
+++ b/src/Orchard.Specs/ContentRights.feature.cs
@@ -3,7 +3,7 @@
 //      This code was generated by SpecFlow (http://www.specflow.org/).
 //      SpecFlow Version:1.9.0.77
 //      SpecFlow Generator Version:1.9.0.0
-//      Runtime Version:4.0.30319.33440
+//      Runtime Version:4.0.30319.34014
 // 
 //      Changes to this file may cause incorrect behavior and will be lost if
 //      the code is regenerated.
diff --git a/src/Orchard.Specs/ContentTypes.feature.cs b/src/Orchard.Specs/ContentTypes.feature.cs
index 74a5b97eb..3e9066312 100644
--- a/src/Orchard.Specs/ContentTypes.feature.cs
+++ b/src/Orchard.Specs/ContentTypes.feature.cs
@@ -3,7 +3,7 @@
 //      This code was generated by SpecFlow (http://www.specflow.org/).
 //      SpecFlow Version:1.9.0.77
 //      SpecFlow Generator Version:1.9.0.0
-//      Runtime Version:4.0.30319.33440
+//      Runtime Version:4.0.30319.34014
 // 
 //      Changes to this file may cause incorrect behavior and will be lost if
 //      the code is regenerated.
diff --git a/src/Orchard.Specs/Enumeration.feature.cs b/src/Orchard.Specs/Enumeration.feature.cs
index 8c9b1cc16..2241d667c 100644
--- a/src/Orchard.Specs/Enumeration.feature.cs
+++ b/src/Orchard.Specs/Enumeration.feature.cs
@@ -3,7 +3,7 @@
 //      This code was generated by SpecFlow (http://www.specflow.org/).
 //      SpecFlow Version:1.9.0.77
 //      SpecFlow Generator Version:1.9.0.0
-//      Runtime Version:4.0.30319.33440
+//      Runtime Version:4.0.30319.34014
 // 
 //      Changes to this file may cause incorrect behavior and will be lost if
 //      the code is regenerated.
diff --git a/src/Orchard.Specs/Input.feature.cs b/src/Orchard.Specs/Input.feature.cs
index 1e1b7cf0a..ade6902bf 100644
--- a/src/Orchard.Specs/Input.feature.cs
+++ b/src/Orchard.Specs/Input.feature.cs
@@ -3,7 +3,7 @@
 //      This code was generated by SpecFlow (http://www.specflow.org/).
 //      SpecFlow Version:1.9.0.77
 //      SpecFlow Generator Version:1.9.0.0
-//      Runtime Version:4.0.30319.33440
+//      Runtime Version:4.0.30319.34014
 // 
 //      Changes to this file may cause incorrect behavior and will be lost if
 //      the code is regenerated.
diff --git a/src/Orchard.Specs/Link.feature.cs b/src/Orchard.Specs/Link.feature.cs
index bcdb4994a..e226372db 100644
--- a/src/Orchard.Specs/Link.feature.cs
+++ b/src/Orchard.Specs/Link.feature.cs
@@ -3,7 +3,7 @@
 //      This code was generated by SpecFlow (http://www.specflow.org/).
 //      SpecFlow Version:1.9.0.77
 //      SpecFlow Generator Version:1.9.0.0
-//      Runtime Version:4.0.30319.33440
+//      Runtime Version:4.0.30319.34014
 // 
 //      Changes to this file may cause incorrect behavior and will be lost if
 //      the code is regenerated.
diff --git a/src/Orchard.Specs/Media.feature.cs b/src/Orchard.Specs/Media.feature.cs
index 577000422..a9da6dd42 100644
--- a/src/Orchard.Specs/Media.feature.cs
+++ b/src/Orchard.Specs/Media.feature.cs
@@ -3,7 +3,7 @@
 //      This code was generated by SpecFlow (http://www.specflow.org/).
 //      SpecFlow Version:1.9.0.77
 //      SpecFlow Generator Version:1.9.0.0
-//      Runtime Version:4.0.30319.33440
+//      Runtime Version:4.0.30319.34014
 // 
 //      Changes to this file may cause incorrect behavior and will be lost if
 //      the code is regenerated.
diff --git a/src/Orchard.Specs/MediaPicker.feature.cs b/src/Orchard.Specs/MediaPicker.feature.cs
index 38787d605..9ff2adb90 100644
--- a/src/Orchard.Specs/MediaPicker.feature.cs
+++ b/src/Orchard.Specs/MediaPicker.feature.cs
@@ -3,7 +3,7 @@
 //      This code was generated by SpecFlow (http://www.specflow.org/).
 //      SpecFlow Version:1.9.0.77
 //      SpecFlow Generator Version:1.9.0.0
-//      Runtime Version:4.0.30319.33440
+//      Runtime Version:4.0.30319.34014
 // 
 //      Changes to this file may cause incorrect behavior and will be lost if
 //      the code is regenerated.
diff --git a/src/Orchard.Specs/Modules.feature.cs b/src/Orchard.Specs/Modules.feature.cs
index 278bf7fd0..1daad6ee7 100644
--- a/src/Orchard.Specs/Modules.feature.cs
+++ b/src/Orchard.Specs/Modules.feature.cs
@@ -3,7 +3,7 @@
 //      This code was generated by SpecFlow (http://www.specflow.org/).
 //      SpecFlow Version:1.9.0.77
 //      SpecFlow Generator Version:1.9.0.0
-//      Runtime Version:4.0.30319.33440
+//      Runtime Version:4.0.30319.34014
 // 
 //      Changes to this file may cause incorrect behavior and will be lost if
 //      the code is regenerated.
diff --git a/src/Orchard.Specs/MultiTenancy.feature.cs b/src/Orchard.Specs/MultiTenancy.feature.cs
index 8fca85fc1..d1d54d065 100644
--- a/src/Orchard.Specs/MultiTenancy.feature.cs
+++ b/src/Orchard.Specs/MultiTenancy.feature.cs
@@ -3,7 +3,7 @@
 //      This code was generated by SpecFlow (http://www.specflow.org/).
 //      SpecFlow Version:1.9.0.77
 //      SpecFlow Generator Version:1.9.0.0
-//      Runtime Version:4.0.30319.33440
+//      Runtime Version:4.0.30319.34014
 // 
 //      Changes to this file may cause incorrect behavior and will be lost if
 //      the code is regenerated.
diff --git a/src/Orchard.Specs/Numeric.feature.cs b/src/Orchard.Specs/Numeric.feature.cs
index 33a06b389..a676279cd 100644
--- a/src/Orchard.Specs/Numeric.feature.cs
+++ b/src/Orchard.Specs/Numeric.feature.cs
@@ -3,7 +3,7 @@
 //      This code was generated by SpecFlow (http://www.specflow.org/).
 //      SpecFlow Version:1.9.0.77
 //      SpecFlow Generator Version:1.9.0.0
-//      Runtime Version:4.0.30319.33440
+//      Runtime Version:4.0.30319.34014
 // 
 //      Changes to this file may cause incorrect behavior and will be lost if
 //      the code is regenerated.
diff --git a/src/Orchard.Specs/Orchard.Specs.csproj b/src/Orchard.Specs/Orchard.Specs.csproj
index 7f5448a3b..e11d9f979 100644
--- a/src/Orchard.Specs/Orchard.Specs.csproj
+++ b/src/Orchard.Specs/Orchard.Specs.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
@@ -10,7 +10,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.Specs</RootNamespace>
     <AssemblyName>Orchard.Specs</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.Specs/Pages.feature.cs b/src/Orchard.Specs/Pages.feature.cs
index 5d6bbe165..b300d30e3 100644
--- a/src/Orchard.Specs/Pages.feature.cs
+++ b/src/Orchard.Specs/Pages.feature.cs
@@ -3,7 +3,7 @@
 //      This code was generated by SpecFlow (http://www.specflow.org/).
 //      SpecFlow Version:1.9.0.77
 //      SpecFlow Generator Version:1.9.0.0
-//      Runtime Version:4.0.30319.33440
+//      Runtime Version:4.0.30319.34014
 // 
 //      Changes to this file may cause incorrect behavior and will be lost if
 //      the code is regenerated.
diff --git a/src/Orchard.Specs/PermissionModel.feature.cs b/src/Orchard.Specs/PermissionModel.feature.cs
index 2b82e874c..5d5cdd391 100644
--- a/src/Orchard.Specs/PermissionModel.feature.cs
+++ b/src/Orchard.Specs/PermissionModel.feature.cs
@@ -3,7 +3,7 @@
 //      This code was generated by SpecFlow (http://www.specflow.org/).
 //      SpecFlow Version:1.9.0.77
 //      SpecFlow Generator Version:1.9.0.0
-//      Runtime Version:4.0.30319.33440
+//      Runtime Version:4.0.30319.34014
 // 
 //      Changes to this file may cause incorrect behavior and will be lost if
 //      the code is regenerated.
diff --git a/src/Orchard.Specs/Setup.feature.cs b/src/Orchard.Specs/Setup.feature.cs
index 54070df40..c17b46dfb 100644
--- a/src/Orchard.Specs/Setup.feature.cs
+++ b/src/Orchard.Specs/Setup.feature.cs
@@ -3,7 +3,7 @@
 //      This code was generated by SpecFlow (http://www.specflow.org/).
 //      SpecFlow Version:1.9.0.77
 //      SpecFlow Generator Version:1.9.0.0
-//      Runtime Version:4.0.30319.33440
+//      Runtime Version:4.0.30319.34014
 // 
 //      Changes to this file may cause incorrect behavior and will be lost if
 //      the code is regenerated.
diff --git a/src/Orchard.Specs/Tags.feature.cs b/src/Orchard.Specs/Tags.feature.cs
index 422c27747..c1fec6f18 100644
--- a/src/Orchard.Specs/Tags.feature.cs
+++ b/src/Orchard.Specs/Tags.feature.cs
@@ -3,7 +3,7 @@
 //      This code was generated by SpecFlow (http://www.specflow.org/).
 //      SpecFlow Version:1.9.0.77
 //      SpecFlow Generator Version:1.9.0.0
-//      Runtime Version:4.0.30319.33440
+//      Runtime Version:4.0.30319.34014
 // 
 //      Changes to this file may cause incorrect behavior and will be lost if
 //      the code is regenerated.
diff --git a/src/Orchard.Specs/Users.feature.cs b/src/Orchard.Specs/Users.feature.cs
index 7c3035eae..2eecf6ab1 100644
--- a/src/Orchard.Specs/Users.feature.cs
+++ b/src/Orchard.Specs/Users.feature.cs
@@ -3,7 +3,7 @@
 //      This code was generated by SpecFlow (http://www.specflow.org/).
 //      SpecFlow Version:1.9.0.77
 //      SpecFlow Generator Version:1.9.0.0
-//      Runtime Version:4.0.30319.33440
+//      Runtime Version:4.0.30319.34014
 // 
 //      Changes to this file may cause incorrect behavior and will be lost if
 //      the code is regenerated.
diff --git a/src/Orchard.Specs/UsingSpecFlow.feature.cs b/src/Orchard.Specs/UsingSpecFlow.feature.cs
index e3f5aecba..1db7c00fc 100644
--- a/src/Orchard.Specs/UsingSpecFlow.feature.cs
+++ b/src/Orchard.Specs/UsingSpecFlow.feature.cs
@@ -3,7 +3,7 @@
 //      This code was generated by SpecFlow (http://www.specflow.org/).
 //      SpecFlow Version:1.9.0.77
 //      SpecFlow Generator Version:1.9.0.0
-//      Runtime Version:4.0.30319.33440
+//      Runtime Version:4.0.30319.34014
 // 
 //      Changes to this file may cause incorrect behavior and will be lost if
 //      the code is regenerated.
diff --git a/src/Orchard.Specs/WebHosting.feature.cs b/src/Orchard.Specs/WebHosting.feature.cs
index a6cb1acdf..351b33053 100644
--- a/src/Orchard.Specs/WebHosting.feature.cs
+++ b/src/Orchard.Specs/WebHosting.feature.cs
@@ -3,7 +3,7 @@
 //      This code was generated by SpecFlow (http://www.specflow.org/).
 //      SpecFlow Version:1.9.0.77
 //      SpecFlow Generator Version:1.9.0.0
-//      Runtime Version:4.0.30319.33440
+//      Runtime Version:4.0.30319.34014
 // 
 //      Changes to this file may cause incorrect behavior and will be lost if
 //      the code is regenerated.
diff --git a/src/Orchard.Tests.Modules/Orchard.Tests.Modules.csproj b/src/Orchard.Tests.Modules/Orchard.Tests.Modules.csproj
index 45a8a7f09..33e117269 100644
--- a/src/Orchard.Tests.Modules/Orchard.Tests.Modules.csproj
+++ b/src/Orchard.Tests.Modules/Orchard.Tests.Modules.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
@@ -10,7 +10,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.Tests.Modules</RootNamespace>
     <AssemblyName>Orchard.Tests.Modules</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.Tests/App.config b/src/Orchard.Tests/App.config
index d1803b13e..f71647a8d 100644
--- a/src/Orchard.Tests/App.config
+++ b/src/Orchard.Tests/App.config
@@ -10,7 +10,7 @@
     </sources>
   </system.diagnostics>
   <startup>
-    <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5"/>
+    <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5.1"/>
   </startup>
   <runtime>
     <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
diff --git a/src/Orchard.Tests/Orchard.Framework.Tests.csproj b/src/Orchard.Tests/Orchard.Framework.Tests.csproj
index 4391e0b10..1cb62398a 100644
--- a/src/Orchard.Tests/Orchard.Framework.Tests.csproj
+++ b/src/Orchard.Tests/Orchard.Framework.Tests.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
@@ -10,7 +10,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.Tests</RootNamespace>
     <AssemblyName>Orchard.Framework.Tests</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.WarmupStarter/Orchard.WarmupStarter.csproj b/src/Orchard.WarmupStarter/Orchard.WarmupStarter.csproj
index 935c2f39c..25bbceaa6 100644
--- a/src/Orchard.WarmupStarter/Orchard.WarmupStarter.csproj
+++ b/src/Orchard.WarmupStarter/Orchard.WarmupStarter.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
@@ -10,7 +10,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.WarmupStarter</RootNamespace>
     <AssemblyName>Orchard.WarmupStarter</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
     <TargetFrameworkProfile />
   </PropertyGroup>
diff --git a/src/Orchard.Web.Tests/Orchard.Web.Tests.csproj b/src/Orchard.Web.Tests/Orchard.Web.Tests.csproj
index 3da30a812..84a3d14fa 100644
--- a/src/Orchard.Web.Tests/Orchard.Web.Tests.csproj
+++ b/src/Orchard.Web.Tests/Orchard.Web.Tests.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
@@ -10,7 +10,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.Web.Tests</RootNamespace>
     <AssemblyName>Orchard.Web.Tests</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.Web/Core/Orchard.Core.csproj b/src/Orchard.Web/Core/Orchard.Core.csproj
index a722d50ef..7b5682342 100644
--- a/src/Orchard.Web/Core/Orchard.Core.csproj
+++ b/src/Orchard.Web/Core/Orchard.Core.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -12,7 +12,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.Core</RootNamespace>
     <AssemblyName>Orchard.Core</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.Web/Core/web.config b/src/Orchard.Web/Core/web.config
index 4b80112af..011e2bc6b 100644
--- a/src/Orchard.Web/Core/web.config
+++ b/src/Orchard.Web/Core/web.config
@@ -23,8 +23,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Lucene/Lucene.csproj b/src/Orchard.Web/Modules/Lucene/Lucene.csproj
index 199291067..39256aade 100644
--- a/src/Orchard.Web/Modules/Lucene/Lucene.csproj
+++ b/src/Orchard.Web/Modules/Lucene/Lucene.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -13,7 +13,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Lucene</RootNamespace>
     <AssemblyName>Lucene</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <UseIISExpress>false</UseIISExpress>
     <FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/Lucene/web.config b/src/Orchard.Web/Modules/Lucene/web.config
index 4b80112af..011e2bc6b 100644
--- a/src/Orchard.Web/Modules/Lucene/web.config
+++ b/src/Orchard.Web/Modules/Lucene/web.config
@@ -23,8 +23,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Markdown/Markdown.csproj b/src/Orchard.Web/Modules/Markdown/Markdown.csproj
index b1acac739..4c4e60597 100644
--- a/src/Orchard.Web/Modules/Markdown/Markdown.csproj
+++ b/src/Orchard.Web/Modules/Markdown/Markdown.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -12,7 +12,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Markdown</RootNamespace>
     <AssemblyName>Markdown</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/Markdown/web.config b/src/Orchard.Web/Modules/Markdown/web.config
index 4b80112af..011e2bc6b 100644
--- a/src/Orchard.Web/Modules/Markdown/web.config
+++ b/src/Orchard.Web/Modules/Markdown/web.config
@@ -23,8 +23,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Orchard.Alias/Orchard.Alias.csproj b/src/Orchard.Web/Modules/Orchard.Alias/Orchard.Alias.csproj
index e4903ceb7..869c7eafc 100644
--- a/src/Orchard.Web/Modules/Orchard.Alias/Orchard.Alias.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Alias/Orchard.Alias.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -12,7 +12,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.Alias</RootNamespace>
     <AssemblyName>Orchard.Alias</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/Orchard.Alias/Web.config b/src/Orchard.Web/Modules/Orchard.Alias/Web.config
index 78e5eb5bb..4f743649a 100644
--- a/src/Orchard.Web/Modules/Orchard.Alias/Web.config
+++ b/src/Orchard.Web/Modules/Orchard.Alias/Web.config
@@ -1,41 +1,45 @@
 <?xml version="1.0"?>
 <configuration>
-
   <configSections>
     <sectionGroup name="system.web.webPages.razor" type="System.Web.WebPages.Razor.Configuration.RazorWebSectionGroup, System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
-      <remove name="host" />
-      <remove name="pages" />
-      <section name="host" type="System.Web.WebPages.Razor.Configuration.HostSection, System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" />
-      <section name="pages" type="System.Web.WebPages.Razor.Configuration.RazorPagesSection, System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" />
+      <remove name="host"/>
+      <remove name="pages"/>
+      <section name="host" type="System.Web.WebPages.Razor.Configuration.HostSection, System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false"/>
+      <section name="pages" type="System.Web.WebPages.Razor.Configuration.RazorPagesSection, System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false"/>
     </sectionGroup>
   </configSections>
-
   <system.web.webPages.razor>
-    <host factoryType="System.Web.Mvc.MvcWebRazorHostFactory, System.Web.Mvc, Version=5.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
+    <host factoryType="System.Web.Mvc.MvcWebRazorHostFactory, System.Web.Mvc, Version=5.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
     <pages pageBaseType="Orchard.Mvc.ViewEngines.Razor.WebViewPage">
       <namespaces>
-        <add namespace="System.Web.Mvc" />
-        <add namespace="System.Web.Mvc.Ajax" />
-        <add namespace="System.Web.Mvc.Html" />
-        <add namespace="System.Web.Routing" />
-        <add namespace="System.Web.WebPages" />
+        <add namespace="System.Web.Mvc"/>
+        <add namespace="System.Web.Mvc.Ajax"/>
+        <add namespace="System.Web.Mvc.Html"/>
+        <add namespace="System.Web.Routing"/>
+        <add namespace="System.Web.WebPages"/>
         <add namespace="System.Linq"/>
         <add namespace="System.Collections.Generic"/>
         <add namespace="Orchard.Mvc.Html"/>
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
 
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Data.Linq, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
-        <add assembly="System.Web.Mvc, Version=5.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
+        <add assembly="System.Web.Mvc, Version=5.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.WebPages, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
       </assemblies>
     </compilation>
   </system.web>
-
-</configuration>
+</configuration>
\ No newline at end of file
diff --git a/src/Orchard.Web/Modules/Orchard.AntiSpam/Orchard.AntiSpam.csproj b/src/Orchard.Web/Modules/Orchard.AntiSpam/Orchard.AntiSpam.csproj
index 32c2885d7..52a6aac21 100644
--- a/src/Orchard.Web/Modules/Orchard.AntiSpam/Orchard.AntiSpam.csproj
+++ b/src/Orchard.Web/Modules/Orchard.AntiSpam/Orchard.AntiSpam.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -12,7 +12,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.AntiSpam</RootNamespace>
     <AssemblyName>Orchard.AntiSpam</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/Orchard.AntiSpam/Web.config b/src/Orchard.Web/Modules/Orchard.AntiSpam/Web.config
index 43455591b..4f743649a 100644
--- a/src/Orchard.Web/Modules/Orchard.AntiSpam/Web.config
+++ b/src/Orchard.Web/Modules/Orchard.AntiSpam/Web.config
@@ -23,8 +23,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Orchard.ArchiveLater/Orchard.ArchiveLater.csproj b/src/Orchard.Web/Modules/Orchard.ArchiveLater/Orchard.ArchiveLater.csproj
index 9eec27d21..016b25c76 100644
--- a/src/Orchard.Web/Modules/Orchard.ArchiveLater/Orchard.ArchiveLater.csproj
+++ b/src/Orchard.Web/Modules/Orchard.ArchiveLater/Orchard.ArchiveLater.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -13,7 +13,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.ArchiveLater</RootNamespace>
     <AssemblyName>Orchard.ArchiveLater</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/Orchard.ArchiveLater/web.config b/src/Orchard.Web/Modules/Orchard.ArchiveLater/web.config
index 4b80112af..011e2bc6b 100644
--- a/src/Orchard.Web/Modules/Orchard.ArchiveLater/web.config
+++ b/src/Orchard.Web/Modules/Orchard.ArchiveLater/web.config
@@ -23,8 +23,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Orchard.AuditTrail/Orchard.AuditTrail.csproj b/src/Orchard.Web/Modules/Orchard.AuditTrail/Orchard.AuditTrail.csproj
index 7a84b16c0..a1cad07ca 100644
--- a/src/Orchard.Web/Modules/Orchard.AuditTrail/Orchard.AuditTrail.csproj
+++ b/src/Orchard.Web/Modules/Orchard.AuditTrail/Orchard.AuditTrail.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -12,7 +12,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.AuditTrail</RootNamespace>
     <AssemblyName>Orchard.AuditTrail</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
@@ -57,13 +57,16 @@
     <Reference Include="System.ComponentModel.DataAnnotations">
       <RequiredTargetFramework>3.5</RequiredTargetFramework>
     </Reference>
+    <Reference Include="System.Data.DataSetExtensions" />
+    <Reference Include="System.Web.ApplicationServices" />
     <Reference Include="System.Web.DynamicData" />
+    <Reference Include="System.Web.Entity" />
+    <Reference Include="System.Web.Extensions" />
     <Reference Include="System.Web.Mvc, Version=5.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
       <HintPath>..\..\..\..\lib\aspnetmvc\System.Web.Mvc.dll</HintPath>
     </Reference>
     <Reference Include="System.Web" />
-    <Reference Include="System.Web.Extensions" />
     <Reference Include="System.Web.Abstractions" />
     <Reference Include="System.Web.Routing" />
     <Reference Include="System.Xml" />
diff --git a/src/Orchard.Web/Modules/Orchard.AuditTrail/Web.config b/src/Orchard.Web/Modules/Orchard.AuditTrail/Web.config
index 3e6819a42..31cadeeb0 100644
--- a/src/Orchard.Web/Modules/Orchard.AuditTrail/Web.config
+++ b/src/Orchard.Web/Modules/Orchard.AuditTrail/Web.config
@@ -1,42 +1,46 @@
 <?xml version="1.0"?>
 <configuration>
+  <configSections>
+    <sectionGroup name="system.web.webPages.razor" type="System.Web.WebPages.Razor.Configuration.RazorWebSectionGroup, System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
+      <remove name="host"/>
+      <remove name="pages"/>
+      <section name="host" type="System.Web.WebPages.Razor.Configuration.HostSection, System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false"/>
+      <section name="pages" type="System.Web.WebPages.Razor.Configuration.RazorPagesSection, System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false"/>
+    </sectionGroup>
+  </configSections>
+  <system.web.webPages.razor>
+    <host factoryType="System.Web.Mvc.MvcWebRazorHostFactory, System.Web.Mvc, Version=5.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
+    <pages pageBaseType="Orchard.Mvc.ViewEngines.Razor.WebViewPage">
+      <namespaces>
+        <add namespace="System.Web.Mvc"/>
+        <add namespace="System.Web.Mvc.Ajax"/>
+        <add namespace="System.Web.Mvc.Html"/>
+        <add namespace="System.Web.Routing"/>
+        <add namespace="System.Web.WebPages"/>
+        <add namespace="System.Linq"/>
+        <add namespace="System.Collections.Generic"/>
+        <add namespace="Orchard.Mvc.Html"/>
+      </namespaces>
+    </pages>
+  </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
 
-    <configSections>
-        <sectionGroup name="system.web.webPages.razor" type="System.Web.WebPages.Razor.Configuration.RazorWebSectionGroup, System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
-            <remove name="host" />
-            <remove name="pages" />
-            <section name="host" type="System.Web.WebPages.Razor.Configuration.HostSection, System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" />
-            <section name="pages" type="System.Web.WebPages.Razor.Configuration.RazorPagesSection, System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" />
-        </sectionGroup>
-    </configSections>
-
-    <system.web.webPages.razor>
-        <host factoryType="System.Web.Mvc.MvcWebRazorHostFactory, System.Web.Mvc, Version=5.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
-        <pages pageBaseType="Orchard.Mvc.ViewEngines.Razor.WebViewPage">
-            <namespaces>
-                <add namespace="System.Web.Mvc" />
-                <add namespace="System.Web.Mvc.Ajax" />
-                <add namespace="System.Web.Mvc.Html" />
-                <add namespace="System.Web.Routing" />
-                <add namespace="System.Web.WebPages" />
-                <add namespace="System.Linq"/>
-                <add namespace="System.Collections.Generic"/>
-                <add namespace="Orchard.Mvc.Html"/>
-            </namespaces>
-        </pages>
-    </system.web.webPages.razor>
-
-    <system.web>
-        <compilation targetFramework="4.5">
-            <assemblies>
-                <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
-                <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
-                <add assembly="System.Data.Linq, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
-                <add assembly="System.Web.Mvc, Version=5.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
-                <add assembly="System.Web.WebPages, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
-                <add assembly="System.Xml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/>
-            </assemblies>
-        </compilation>
-    </system.web>
-
-</configuration>
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
+  <system.web>
+    <compilation targetFramework="4.5.1">
+      <assemblies>
+        <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
+        <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
+        <add assembly="System.Data.Linq, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
+        <add assembly="System.Web.Mvc, Version=5.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
+        <add assembly="System.Web.WebPages, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
+        <add assembly="System.Xml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/>
+      </assemblies>
+    </compilation>
+  </system.web>
+</configuration>
\ No newline at end of file
diff --git a/src/Orchard.Web/Modules/Orchard.Autoroute/Orchard.Autoroute.csproj b/src/Orchard.Web/Modules/Orchard.Autoroute/Orchard.Autoroute.csproj
index c8fb67603..91f66b184 100644
--- a/src/Orchard.Web/Modules/Orchard.Autoroute/Orchard.Autoroute.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Autoroute/Orchard.Autoroute.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -12,7 +12,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.Autoroute</RootNamespace>
     <AssemblyName>Orchard.Autoroute</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/Orchard.Autoroute/Web.config b/src/Orchard.Web/Modules/Orchard.Autoroute/Web.config
index c5bde5d15..58fa891d2 100644
--- a/src/Orchard.Web/Modules/Orchard.Autoroute/Web.config
+++ b/src/Orchard.Web/Modules/Orchard.Autoroute/Web.config
@@ -22,8 +22,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Orchard.Azure.MediaServices/Orchard.Azure.MediaServices.csproj b/src/Orchard.Web/Modules/Orchard.Azure.MediaServices/Orchard.Azure.MediaServices.csproj
index dd2b9891d..61ef50114 100644
--- a/src/Orchard.Web/Modules/Orchard.Azure.MediaServices/Orchard.Azure.MediaServices.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Azure.MediaServices/Orchard.Azure.MediaServices.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v$(VisualStudioVersion)\TypeScript\Microsoft.TypeScript.Default.props" Condition="Exists('$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v$(VisualStudioVersion)\TypeScript\Microsoft.TypeScript.Default.props')" />
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
@@ -13,7 +13,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.Azure.MediaServices</RootNamespace>
     <AssemblyName>Orchard.Azure.MediaServices</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/Orchard.Azure.MediaServices/Web.config b/src/Orchard.Web/Modules/Orchard.Azure.MediaServices/Web.config
index 5f0e9f168..d6cfaffb4 100644
--- a/src/Orchard.Web/Modules/Orchard.Azure.MediaServices/Web.config
+++ b/src/Orchard.Web/Modules/Orchard.Azure.MediaServices/Web.config
@@ -1,53 +1,56 @@
 <?xml version="1.0"?>
 <configuration>
-    
-    <configSections>
-        <sectionGroup name="system.web.webPages.razor" type="System.Web.WebPages.Razor.Configuration.RazorWebSectionGroup, System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
-            <remove name="host"/>
-            <remove name="pages"/>
-            <section name="host" type="System.Web.WebPages.Razor.Configuration.HostSection, System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false"/>
-            <section name="pages" type="System.Web.WebPages.Razor.Configuration.RazorPagesSection, System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false"/>
-        </sectionGroup>
-    </configSections>
-    
-    <system.web.webPages.razor>
-        <host factoryType="System.Web.Mvc.MvcWebRazorHostFactory, System.Web.Mvc, Version=5.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
-        <pages pageBaseType="Orchard.Mvc.ViewEngines.Razor.WebViewPage">
-            <namespaces>
-                <add namespace="System.Collections.Generic"/>
-                <add namespace="System.Linq"/>
-                <add namespace="System.Web.Mvc"/>
-                <add namespace="System.Web.Mvc.Ajax"/>
-                <add namespace="System.Web.Mvc.Html"/>
-                <add namespace="System.Web.Routing"/>
-                <add namespace="System.Web.WebPages"/>
-                <add namespace="Orchard.Mvc.Html"/>
-            </namespaces>
-        </pages>
-    </system.web.webPages.razor>
-    
-    <system.web>
-        <compilation targetFramework="4.5">
-            <assemblies>
-                <!--<add assembly="System.Core, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>-->
-                <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
-                <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
-                <add assembly="System.Data.Linq, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
-                <add assembly="System.Xml.Linq, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
-                <add assembly="System.Web.Mvc, Version=5.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
-                <add assembly="System.Web.WebPages, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
-            </assemblies>
-        </compilation>
-    </system.web>
-    
-    <runtime>
-        <!-- To avoid compiler warnings. -->
-        <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
-            <dependentAssembly>
-                <assemblyIdentity name="Microsoft.WindowsAzure.Storage" publicKeyToken="31bf3856ad364e35" culture="neutral"/>
-                <bindingRedirect oldVersion="0.0.0.0-3.1.0.0" newVersion="3.1.0.0"/>
-            </dependentAssembly>
-        </assemblyBinding>
-    </runtime>
-    
+  <configSections>
+    <sectionGroup name="system.web.webPages.razor" type="System.Web.WebPages.Razor.Configuration.RazorWebSectionGroup, System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
+      <remove name="host"/>
+      <remove name="pages"/>
+      <section name="host" type="System.Web.WebPages.Razor.Configuration.HostSection, System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false"/>
+      <section name="pages" type="System.Web.WebPages.Razor.Configuration.RazorPagesSection, System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false"/>
+    </sectionGroup>
+  </configSections>
+  <system.web.webPages.razor>
+    <host factoryType="System.Web.Mvc.MvcWebRazorHostFactory, System.Web.Mvc, Version=5.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
+    <pages pageBaseType="Orchard.Mvc.ViewEngines.Razor.WebViewPage">
+      <namespaces>
+        <add namespace="System.Collections.Generic"/>
+        <add namespace="System.Linq"/>
+        <add namespace="System.Web.Mvc"/>
+        <add namespace="System.Web.Mvc.Ajax"/>
+        <add namespace="System.Web.Mvc.Html"/>
+        <add namespace="System.Web.Routing"/>
+        <add namespace="System.Web.WebPages"/>
+        <add namespace="Orchard.Mvc.Html"/>
+      </namespaces>
+    </pages>
+  </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
+  <system.web>
+    <compilation targetFramework="4.5.1">
+      <assemblies>
+        <!--<add assembly="System.Core, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>-->
+        <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
+        <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
+        <add assembly="System.Data.Linq, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
+        <add assembly="System.Xml.Linq, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
+        <add assembly="System.Web.Mvc, Version=5.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
+        <add assembly="System.Web.WebPages, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
+      </assemblies>
+    </compilation>
+  </system.web>
+  <runtime>
+    <!-- To avoid compiler warnings. -->
+    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
+      <dependentAssembly>
+        <assemblyIdentity name="Microsoft.WindowsAzure.Storage" publicKeyToken="31bf3856ad364e35" culture="neutral"/>
+        <bindingRedirect oldVersion="0.0.0.0-3.1.0.0" newVersion="3.1.0.0"/>
+      </dependentAssembly>
+    </assemblyBinding>
+  </runtime>
 </configuration>
\ No newline at end of file
diff --git a/src/Orchard.Web/Modules/Orchard.Azure/Orchard.Azure.csproj b/src/Orchard.Web/Modules/Orchard.Azure/Orchard.Azure.csproj
index e18047b89..aa6a2c637 100644
--- a/src/Orchard.Web/Modules/Orchard.Azure/Orchard.Azure.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Azure/Orchard.Azure.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -12,7 +12,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.Azure</RootNamespace>
     <AssemblyName>Orchard.Azure</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
@@ -98,14 +98,17 @@
     </Reference>
     <Reference Include="System" />
     <Reference Include="System.Configuration" />
+    <Reference Include="System.Data.DataSetExtensions" />
     <Reference Include="System.Web" />
     <Reference Include="System.Web.ApplicationServices" />
+    <Reference Include="System.Web.DynamicData" />
     <Reference Include="System.Web.Entity" />
     <Reference Include="System.Web.Extensions" />
     <Reference Include="System.Web.Mvc, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
       <HintPath>..\..\..\..\lib\aspnetmvc\System.Web.Mvc.dll</HintPath>
     </Reference>
+    <Reference Include="System.Xml.Linq" />
   </ItemGroup>
   <ItemGroup>
     <Compile Include="Services\Caching\Output\AzureRedisOutputCacheStorageProvider.cs" />
diff --git a/src/Orchard.Web/Modules/Orchard.Azure/Web.config b/src/Orchard.Web/Modules/Orchard.Azure/Web.config
index 43455591b..4f743649a 100644
--- a/src/Orchard.Web/Modules/Orchard.Azure/Web.config
+++ b/src/Orchard.Web/Modules/Orchard.Azure/Web.config
@@ -23,8 +23,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Orchard.Blogs/Orchard.Blogs.csproj b/src/Orchard.Web/Modules/Orchard.Blogs/Orchard.Blogs.csproj
index ab91981ae..3681dff7f 100644
--- a/src/Orchard.Web/Modules/Orchard.Blogs/Orchard.Blogs.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Blogs/Orchard.Blogs.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -12,7 +12,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.Blogs</RootNamespace>
     <AssemblyName>Orchard.Blogs</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/Orchard.Blogs/web.config b/src/Orchard.Web/Modules/Orchard.Blogs/web.config
index 4b80112af..011e2bc6b 100644
--- a/src/Orchard.Web/Modules/Orchard.Blogs/web.config
+++ b/src/Orchard.Web/Modules/Orchard.Blogs/web.config
@@ -23,8 +23,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Orchard.Caching/Orchard.Caching.csproj b/src/Orchard.Web/Modules/Orchard.Caching/Orchard.Caching.csproj
index 3727b0cce..e9dce9722 100644
--- a/src/Orchard.Web/Modules/Orchard.Caching/Orchard.Caching.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Caching/Orchard.Caching.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -12,7 +12,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.Caching</RootNamespace>
     <AssemblyName>Orchard.Caching</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/Orchard.Caching/Web.config b/src/Orchard.Web/Modules/Orchard.Caching/Web.config
index 5d17c03ec..e3fac61ce 100644
--- a/src/Orchard.Web/Modules/Orchard.Caching/Web.config
+++ b/src/Orchard.Web/Modules/Orchard.Caching/Web.config
@@ -1,41 +1,45 @@
 <?xml version="1.0"?>
 <configuration>
-
   <configSections>
     <sectionGroup name="system.web.webPages.razor" type="System.Web.WebPages.Razor.Configuration.RazorWebSectionGroup, System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
-      <remove name="host" />
-      <remove name="pages" />
-      <section name="host" type="System.Web.WebPages.Razor.Configuration.HostSection, System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" />
-      <section name="pages" type="System.Web.WebPages.Razor.Configuration.RazorPagesSection, System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" />
+      <remove name="host"/>
+      <remove name="pages"/>
+      <section name="host" type="System.Web.WebPages.Razor.Configuration.HostSection, System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false"/>
+      <section name="pages" type="System.Web.WebPages.Razor.Configuration.RazorPagesSection, System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false"/>
     </sectionGroup>
   </configSections>
-
   <system.web.webPages.razor>
-    <host factoryType="System.Web.Mvc.MvcWebRazorHostFactory, System.Web.Mvc, Version=5.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
+    <host factoryType="System.Web.Mvc.MvcWebRazorHostFactory, System.Web.Mvc, Version=5.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
     <pages pageBaseType="Orchard.Mvc.ViewEngines.Razor.WebViewPage">
       <namespaces>
-        <add namespace="System.Web.Mvc" />
-        <add namespace="System.Web.Mvc.Ajax" />
-        <add namespace="System.Web.Mvc.Html" />
-        <add namespace="System.Web.Routing" />
-        <add namespace="System.Web.WebPages" />
+        <add namespace="System.Web.Mvc"/>
+        <add namespace="System.Web.Mvc.Ajax"/>
+        <add namespace="System.Web.Mvc.Html"/>
+        <add namespace="System.Web.Routing"/>
+        <add namespace="System.Web.WebPages"/>
         <add namespace="System.Linq"/>
         <add namespace="System.Collections.Generic"/>
         <add namespace="Orchard.Mvc.Html"/>
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
 
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Data.Linq, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
-        <add assembly="System.Web.Mvc, Version=5.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
+        <add assembly="System.Web.Mvc, Version=5.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.WebPages, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
       </assemblies>
     </compilation>
   </system.web>
-
-</configuration>
+</configuration>
\ No newline at end of file
diff --git a/src/Orchard.Web/Modules/Orchard.CodeGeneration/Orchard.CodeGeneration.csproj b/src/Orchard.Web/Modules/Orchard.CodeGeneration/Orchard.CodeGeneration.csproj
index 9e32becae..136cc0298 100644
--- a/src/Orchard.Web/Modules/Orchard.CodeGeneration/Orchard.CodeGeneration.csproj
+++ b/src/Orchard.Web/Modules/Orchard.CodeGeneration/Orchard.CodeGeneration.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -13,7 +13,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.CodeGeneration</RootNamespace>
     <AssemblyName>Orchard.CodeGeneration</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <UseIISExpress>false</UseIISExpress>
     <FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/Orchard.CodeGeneration/web.config b/src/Orchard.Web/Modules/Orchard.CodeGeneration/web.config
index 4b80112af..011e2bc6b 100644
--- a/src/Orchard.Web/Modules/Orchard.CodeGeneration/web.config
+++ b/src/Orchard.Web/Modules/Orchard.CodeGeneration/web.config
@@ -23,8 +23,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Orchard.Comments/Orchard.Comments.csproj b/src/Orchard.Web/Modules/Orchard.Comments/Orchard.Comments.csproj
index 07e2fdf11..819aed082 100644
--- a/src/Orchard.Web/Modules/Orchard.Comments/Orchard.Comments.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Comments/Orchard.Comments.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -12,7 +12,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.Comments</RootNamespace>
     <AssemblyName>Orchard.Comments</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/Orchard.Comments/web.config b/src/Orchard.Web/Modules/Orchard.Comments/web.config
index 4b80112af..011e2bc6b 100644
--- a/src/Orchard.Web/Modules/Orchard.Comments/web.config
+++ b/src/Orchard.Web/Modules/Orchard.Comments/web.config
@@ -23,8 +23,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Orchard.ContentPermissions/Orchard.ContentPermissions.csproj b/src/Orchard.Web/Modules/Orchard.ContentPermissions/Orchard.ContentPermissions.csproj
index b1f79a206..caf95fb86 100644
--- a/src/Orchard.Web/Modules/Orchard.ContentPermissions/Orchard.ContentPermissions.csproj
+++ b/src/Orchard.Web/Modules/Orchard.ContentPermissions/Orchard.ContentPermissions.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -12,7 +12,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.ContentPermissions</RootNamespace>
     <AssemblyName>Orchard.ContentPermissions</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/Orchard.ContentPermissions/Web.config b/src/Orchard.Web/Modules/Orchard.ContentPermissions/Web.config
index 43455591b..4f743649a 100644
--- a/src/Orchard.Web/Modules/Orchard.ContentPermissions/Web.config
+++ b/src/Orchard.Web/Modules/Orchard.ContentPermissions/Web.config
@@ -23,8 +23,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Orchard.ContentPicker/Orchard.ContentPicker.csproj b/src/Orchard.Web/Modules/Orchard.ContentPicker/Orchard.ContentPicker.csproj
index 6fe9a78a0..fecc45b5b 100644
--- a/src/Orchard.Web/Modules/Orchard.ContentPicker/Orchard.ContentPicker.csproj
+++ b/src/Orchard.Web/Modules/Orchard.ContentPicker/Orchard.ContentPicker.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -12,7 +12,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.ContentPicker</RootNamespace>
     <AssemblyName>Orchard.ContentPicker</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/Orchard.ContentPicker/Web.config b/src/Orchard.Web/Modules/Orchard.ContentPicker/Web.config
index 43455591b..4f743649a 100644
--- a/src/Orchard.Web/Modules/Orchard.ContentPicker/Web.config
+++ b/src/Orchard.Web/Modules/Orchard.ContentPicker/Web.config
@@ -23,8 +23,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Orchard.ContentTypes/Orchard.ContentTypes.csproj b/src/Orchard.Web/Modules/Orchard.ContentTypes/Orchard.ContentTypes.csproj
index fd247f883..cb2d13600 100644
--- a/src/Orchard.Web/Modules/Orchard.ContentTypes/Orchard.ContentTypes.csproj
+++ b/src/Orchard.Web/Modules/Orchard.ContentTypes/Orchard.ContentTypes.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -13,7 +13,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.ContentTypes</RootNamespace>
     <AssemblyName>Orchard.ContentTypes</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <UseIISExpress>false</UseIISExpress>
     <FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/Orchard.ContentTypes/web.config b/src/Orchard.Web/Modules/Orchard.ContentTypes/web.config
index 4b80112af..011e2bc6b 100644
--- a/src/Orchard.Web/Modules/Orchard.ContentTypes/web.config
+++ b/src/Orchard.Web/Modules/Orchard.ContentTypes/web.config
@@ -23,8 +23,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Orchard.CustomForms/Orchard.CustomForms.csproj b/src/Orchard.Web/Modules/Orchard.CustomForms/Orchard.CustomForms.csproj
index cf2b35c4f..73800c718 100644
--- a/src/Orchard.Web/Modules/Orchard.CustomForms/Orchard.CustomForms.csproj
+++ b/src/Orchard.Web/Modules/Orchard.CustomForms/Orchard.CustomForms.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -12,7 +12,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.CustomForms</RootNamespace>
     <AssemblyName>Orchard.CustomForms</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/Orchard.CustomForms/Web.config b/src/Orchard.Web/Modules/Orchard.CustomForms/Web.config
index 43455591b..4f743649a 100644
--- a/src/Orchard.Web/Modules/Orchard.CustomForms/Web.config
+++ b/src/Orchard.Web/Modules/Orchard.CustomForms/Web.config
@@ -23,8 +23,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Orchard.DesignerTools/Orchard.DesignerTools.csproj b/src/Orchard.Web/Modules/Orchard.DesignerTools/Orchard.DesignerTools.csproj
index dae557e2a..824232695 100644
--- a/src/Orchard.Web/Modules/Orchard.DesignerTools/Orchard.DesignerTools.csproj
+++ b/src/Orchard.Web/Modules/Orchard.DesignerTools/Orchard.DesignerTools.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -12,7 +12,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.DesignerTools</RootNamespace>
     <AssemblyName>Orchard.DesignerTools</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/Orchard.DesignerTools/Web.config b/src/Orchard.Web/Modules/Orchard.DesignerTools/Web.config
index ccb3d00fb..914db902f 100644
--- a/src/Orchard.Web/Modules/Orchard.DesignerTools/Web.config
+++ b/src/Orchard.Web/Modules/Orchard.DesignerTools/Web.config
@@ -23,8 +23,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Orchard.Email/Orchard.Email.csproj b/src/Orchard.Web/Modules/Orchard.Email/Orchard.Email.csproj
index 0565d54af..21b1ed0e3 100644
--- a/src/Orchard.Web/Modules/Orchard.Email/Orchard.Email.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Email/Orchard.Email.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -12,7 +12,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.Email</RootNamespace>
     <AssemblyName>Orchard.Email</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/Orchard.Email/web.config b/src/Orchard.Web/Modules/Orchard.Email/web.config
index 4b80112af..011e2bc6b 100644
--- a/src/Orchard.Web/Modules/Orchard.Email/web.config
+++ b/src/Orchard.Web/Modules/Orchard.Email/web.config
@@ -23,8 +23,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Orchard.Fields/Orchard.Fields.csproj b/src/Orchard.Web/Modules/Orchard.Fields/Orchard.Fields.csproj
index 92d824317..c18c862f5 100644
--- a/src/Orchard.Web/Modules/Orchard.Fields/Orchard.Fields.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Fields/Orchard.Fields.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -12,7 +12,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.Fields</RootNamespace>
     <AssemblyName>Orchard.Fields</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/Orchard.Fields/Web.config b/src/Orchard.Web/Modules/Orchard.Fields/Web.config
index b345c0771..216522018 100644
--- a/src/Orchard.Web/Modules/Orchard.Fields/Web.config
+++ b/src/Orchard.Web/Modules/Orchard.Fields/Web.config
@@ -24,8 +24,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Orchard.Forms/Orchard.Forms.csproj b/src/Orchard.Web/Modules/Orchard.Forms/Orchard.Forms.csproj
index 2a62c3788..7374aa4ab 100644
--- a/src/Orchard.Web/Modules/Orchard.Forms/Orchard.Forms.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Forms/Orchard.Forms.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -12,7 +12,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.Forms</RootNamespace>
     <AssemblyName>Orchard.Forms</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/Orchard.Forms/Web.config b/src/Orchard.Web/Modules/Orchard.Forms/Web.config
index 43455591b..4f743649a 100644
--- a/src/Orchard.Web/Modules/Orchard.Forms/Web.config
+++ b/src/Orchard.Web/Modules/Orchard.Forms/Web.config
@@ -23,8 +23,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Orchard.ImageEditor/Orchard.ImageEditor.csproj b/src/Orchard.Web/Modules/Orchard.ImageEditor/Orchard.ImageEditor.csproj
index 438368861..c0ed1e758 100644
--- a/src/Orchard.Web/Modules/Orchard.ImageEditor/Orchard.ImageEditor.csproj
+++ b/src/Orchard.Web/Modules/Orchard.ImageEditor/Orchard.ImageEditor.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -12,7 +12,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.ImageEditor</RootNamespace>
     <AssemblyName>Orchard.ImageEditor</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/Orchard.ImageEditor/Web.config b/src/Orchard.Web/Modules/Orchard.ImageEditor/Web.config
index 43455591b..4f743649a 100644
--- a/src/Orchard.Web/Modules/Orchard.ImageEditor/Web.config
+++ b/src/Orchard.Web/Modules/Orchard.ImageEditor/Web.config
@@ -23,8 +23,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Orchard.ImportExport/Orchard.ImportExport.csproj b/src/Orchard.Web/Modules/Orchard.ImportExport/Orchard.ImportExport.csproj
index 154ec9a87..b90859493 100644
--- a/src/Orchard.Web/Modules/Orchard.ImportExport/Orchard.ImportExport.csproj
+++ b/src/Orchard.Web/Modules/Orchard.ImportExport/Orchard.ImportExport.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -13,7 +13,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.ImportExport</RootNamespace>
     <AssemblyName>Orchard.ImportExport</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <UseIISExpress>false</UseIISExpress>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/Orchard.ImportExport/web.config b/src/Orchard.Web/Modules/Orchard.ImportExport/web.config
index 4b80112af..011e2bc6b 100644
--- a/src/Orchard.Web/Modules/Orchard.ImportExport/web.config
+++ b/src/Orchard.Web/Modules/Orchard.ImportExport/web.config
@@ -23,8 +23,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Orchard.Indexing/Orchard.Indexing.csproj b/src/Orchard.Web/Modules/Orchard.Indexing/Orchard.Indexing.csproj
index fb6e95307..bdcc4fac3 100644
--- a/src/Orchard.Web/Modules/Orchard.Indexing/Orchard.Indexing.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Indexing/Orchard.Indexing.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -13,7 +13,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.Indexing</RootNamespace>
     <AssemblyName>Orchard.Indexing</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
     <UpgradeBackupLocation>
diff --git a/src/Orchard.Web/Modules/Orchard.Indexing/web.config b/src/Orchard.Web/Modules/Orchard.Indexing/web.config
index 4b80112af..011e2bc6b 100644
--- a/src/Orchard.Web/Modules/Orchard.Indexing/web.config
+++ b/src/Orchard.Web/Modules/Orchard.Indexing/web.config
@@ -23,8 +23,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Orchard.JobsQueue/Orchard.JobsQueue.csproj b/src/Orchard.Web/Modules/Orchard.JobsQueue/Orchard.JobsQueue.csproj
index 7707a9da5..29156d4ca 100644
--- a/src/Orchard.Web/Modules/Orchard.JobsQueue/Orchard.JobsQueue.csproj
+++ b/src/Orchard.Web/Modules/Orchard.JobsQueue/Orchard.JobsQueue.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -13,7 +13,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.JobsQueue</RootNamespace>
     <AssemblyName>Orchard.JobsQueue</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
     <UpgradeBackupLocation>
diff --git a/src/Orchard.Web/Modules/Orchard.JobsQueue/web.config b/src/Orchard.Web/Modules/Orchard.JobsQueue/web.config
index fa7172c74..8d941daf7 100644
--- a/src/Orchard.Web/Modules/Orchard.JobsQueue/web.config
+++ b/src/Orchard.Web/Modules/Orchard.JobsQueue/web.config
@@ -23,8 +23,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Orchard.Lists/Orchard.Lists.csproj b/src/Orchard.Web/Modules/Orchard.Lists/Orchard.Lists.csproj
index 542c5b0f2..4302d8b21 100644
--- a/src/Orchard.Web/Modules/Orchard.Lists/Orchard.Lists.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Lists/Orchard.Lists.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -12,7 +12,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.Lists</RootNamespace>
     <AssemblyName>Orchard.Lists</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/Orchard.Lists/Web.config b/src/Orchard.Web/Modules/Orchard.Lists/Web.config
index 4b80112af..011e2bc6b 100644
--- a/src/Orchard.Web/Modules/Orchard.Lists/Web.config
+++ b/src/Orchard.Web/Modules/Orchard.Lists/Web.config
@@ -23,8 +23,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Orchard.Localization/Orchard.Localization.csproj b/src/Orchard.Web/Modules/Orchard.Localization/Orchard.Localization.csproj
index 02fedfc66..b00ae5817 100644
--- a/src/Orchard.Web/Modules/Orchard.Localization/Orchard.Localization.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Localization/Orchard.Localization.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -13,7 +13,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.Localization</RootNamespace>
     <AssemblyName>Orchard.Localization</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <UseIISExpress>false</UseIISExpress>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/Orchard.Localization/web.config b/src/Orchard.Web/Modules/Orchard.Localization/web.config
index 4b80112af..011e2bc6b 100644
--- a/src/Orchard.Web/Modules/Orchard.Localization/web.config
+++ b/src/Orchard.Web/Modules/Orchard.Localization/web.config
@@ -23,8 +23,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Orchard.Media/Orchard.Media.csproj b/src/Orchard.Web/Modules/Orchard.Media/Orchard.Media.csproj
index 2aabc7e87..b7116542e 100644
--- a/src/Orchard.Web/Modules/Orchard.Media/Orchard.Media.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Media/Orchard.Media.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -12,7 +12,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.Media</RootNamespace>
     <AssemblyName>Orchard.Media</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/Orchard.Media/web.config b/src/Orchard.Web/Modules/Orchard.Media/web.config
index 4b80112af..011e2bc6b 100644
--- a/src/Orchard.Web/Modules/Orchard.Media/web.config
+++ b/src/Orchard.Web/Modules/Orchard.Media/web.config
@@ -23,8 +23,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Orchard.MediaLibrary/Orchard.MediaLibrary.csproj b/src/Orchard.Web/Modules/Orchard.MediaLibrary/Orchard.MediaLibrary.csproj
index 2f25912e9..1c0a5d3ed 100644
--- a/src/Orchard.Web/Modules/Orchard.MediaLibrary/Orchard.MediaLibrary.csproj
+++ b/src/Orchard.Web/Modules/Orchard.MediaLibrary/Orchard.MediaLibrary.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -12,7 +12,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.MediaLibrary</RootNamespace>
     <AssemblyName>Orchard.MediaLibrary</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/Orchard.MediaLibrary/Web.config b/src/Orchard.Web/Modules/Orchard.MediaLibrary/Web.config
index ccb3d00fb..914db902f 100644
--- a/src/Orchard.Web/Modules/Orchard.MediaLibrary/Web.config
+++ b/src/Orchard.Web/Modules/Orchard.MediaLibrary/Web.config
@@ -23,8 +23,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Orchard.MediaPicker/Orchard.MediaPicker.csproj b/src/Orchard.Web/Modules/Orchard.MediaPicker/Orchard.MediaPicker.csproj
index 927ca2e64..397bcc9a7 100644
--- a/src/Orchard.Web/Modules/Orchard.MediaPicker/Orchard.MediaPicker.csproj
+++ b/src/Orchard.Web/Modules/Orchard.MediaPicker/Orchard.MediaPicker.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -12,7 +12,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.MediaPicker</RootNamespace>
     <AssemblyName>Orchard.MediaPicker</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/Orchard.MediaPicker/web.config b/src/Orchard.Web/Modules/Orchard.MediaPicker/web.config
index 4b80112af..011e2bc6b 100644
--- a/src/Orchard.Web/Modules/Orchard.MediaPicker/web.config
+++ b/src/Orchard.Web/Modules/Orchard.MediaPicker/web.config
@@ -23,8 +23,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Orchard.MediaProcessing/Orchard.MediaProcessing.csproj b/src/Orchard.Web/Modules/Orchard.MediaProcessing/Orchard.MediaProcessing.csproj
index 556d0abf0..890e8c972 100644
--- a/src/Orchard.Web/Modules/Orchard.MediaProcessing/Orchard.MediaProcessing.csproj
+++ b/src/Orchard.Web/Modules/Orchard.MediaProcessing/Orchard.MediaProcessing.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -12,7 +12,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.MediaProcessing</RootNamespace>
     <AssemblyName>Orchard.MediaProcessing</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/Orchard.MediaProcessing/Web.config b/src/Orchard.Web/Modules/Orchard.MediaProcessing/Web.config
index 43455591b..4f743649a 100644
--- a/src/Orchard.Web/Modules/Orchard.MediaProcessing/Web.config
+++ b/src/Orchard.Web/Modules/Orchard.MediaProcessing/Web.config
@@ -23,8 +23,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Orchard.Migrations/Orchard.Migrations.csproj b/src/Orchard.Web/Modules/Orchard.Migrations/Orchard.Migrations.csproj
index a84e8e604..0542bde79 100644
--- a/src/Orchard.Web/Modules/Orchard.Migrations/Orchard.Migrations.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Migrations/Orchard.Migrations.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -13,7 +13,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.Migrations</RootNamespace>
     <AssemblyName>Orchard.Migrations</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/Orchard.Migrations/web.config b/src/Orchard.Web/Modules/Orchard.Migrations/web.config
index 4b80112af..011e2bc6b 100644
--- a/src/Orchard.Web/Modules/Orchard.Migrations/web.config
+++ b/src/Orchard.Web/Modules/Orchard.Migrations/web.config
@@ -23,8 +23,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Orchard.Modules/Orchard.Modules.csproj b/src/Orchard.Web/Modules/Orchard.Modules/Orchard.Modules.csproj
index d91d40fd2..36d36d13e 100644
--- a/src/Orchard.Web/Modules/Orchard.Modules/Orchard.Modules.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Modules/Orchard.Modules.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -12,7 +12,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.Modules</RootNamespace>
     <AssemblyName>Orchard.Modules</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/Orchard.Modules/web.config b/src/Orchard.Web/Modules/Orchard.Modules/web.config
index 4b80112af..011e2bc6b 100644
--- a/src/Orchard.Web/Modules/Orchard.Modules/web.config
+++ b/src/Orchard.Web/Modules/Orchard.Modules/web.config
@@ -23,8 +23,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Orchard.MultiTenancy/Orchard.MultiTenancy.csproj b/src/Orchard.Web/Modules/Orchard.MultiTenancy/Orchard.MultiTenancy.csproj
index 044b0a168..4c4f07e8f 100644
--- a/src/Orchard.Web/Modules/Orchard.MultiTenancy/Orchard.MultiTenancy.csproj
+++ b/src/Orchard.Web/Modules/Orchard.MultiTenancy/Orchard.MultiTenancy.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -12,7 +12,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.MultiTenancy</RootNamespace>
     <AssemblyName>Orchard.MultiTenancy</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/Orchard.MultiTenancy/web.config b/src/Orchard.Web/Modules/Orchard.MultiTenancy/web.config
index 4b80112af..011e2bc6b 100644
--- a/src/Orchard.Web/Modules/Orchard.MultiTenancy/web.config
+++ b/src/Orchard.Web/Modules/Orchard.MultiTenancy/web.config
@@ -23,8 +23,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Orchard.OutputCache/Orchard.OutputCache.csproj b/src/Orchard.Web/Modules/Orchard.OutputCache/Orchard.OutputCache.csproj
index 626e04450..5bc54ead5 100644
--- a/src/Orchard.Web/Modules/Orchard.OutputCache/Orchard.OutputCache.csproj
+++ b/src/Orchard.Web/Modules/Orchard.OutputCache/Orchard.OutputCache.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -12,7 +12,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.OutputCache</RootNamespace>
     <AssemblyName>Orchard.OutputCache</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/Orchard.OutputCache/Web.config b/src/Orchard.Web/Modules/Orchard.OutputCache/Web.config
index f6851ea6f..9d37d8eb7 100644
--- a/src/Orchard.Web/Modules/Orchard.OutputCache/Web.config
+++ b/src/Orchard.Web/Modules/Orchard.OutputCache/Web.config
@@ -23,8 +23,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Orchard.Packaging/Orchard.Packaging.csproj b/src/Orchard.Web/Modules/Orchard.Packaging/Orchard.Packaging.csproj
index 357e13995..41fb44184 100644
--- a/src/Orchard.Web/Modules/Orchard.Packaging/Orchard.Packaging.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Packaging/Orchard.Packaging.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -13,7 +13,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.Packaging</RootNamespace>
     <AssemblyName>Orchard.Packaging</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <UseIISExpress>false</UseIISExpress>
     <FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/Orchard.Packaging/Service References/GalleryServer/Reference.cs b/src/Orchard.Web/Modules/Orchard.Packaging/Service References/GalleryServer/Reference.cs
index 6928afd25..aa2d3550b 100644
--- a/src/Orchard.Web/Modules/Orchard.Packaging/Service References/GalleryServer/Reference.cs	
+++ b/src/Orchard.Web/Modules/Orchard.Packaging/Service References/GalleryServer/Reference.cs	
@@ -1,7 +1,7 @@
 //------------------------------------------------------------------------------
 // <auto-generated>
 //     This code was generated by a tool.
-//     Runtime Version:4.0.30319.18051
+//     Runtime Version:4.0.30319.34014
 //
 //     Changes to this file may cause incorrect behavior and will be lost if
 //     the code is regenerated.
@@ -9,7 +9,7 @@
 //------------------------------------------------------------------------------
 
 // Original file name:
-// Generation date: 23-8-2013 08:43:17
+// Generation date: 8/13/2014 1:44:48 PM
 namespace Orchard.Packaging.GalleryServer
 {
     
diff --git a/src/Orchard.Web/Modules/Orchard.Packaging/web.config b/src/Orchard.Web/Modules/Orchard.Packaging/web.config
index 4b80112af..011e2bc6b 100644
--- a/src/Orchard.Web/Modules/Orchard.Packaging/web.config
+++ b/src/Orchard.Web/Modules/Orchard.Packaging/web.config
@@ -23,8 +23,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Orchard.Pages/Orchard.Pages.csproj b/src/Orchard.Web/Modules/Orchard.Pages/Orchard.Pages.csproj
index a48970e57..197d0abb0 100644
--- a/src/Orchard.Web/Modules/Orchard.Pages/Orchard.Pages.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Pages/Orchard.Pages.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -13,7 +13,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.Pages</RootNamespace>
     <AssemblyName>Orchard.Pages</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
     <UpgradeBackupLocation>
diff --git a/src/Orchard.Web/Modules/Orchard.Pages/web.config b/src/Orchard.Web/Modules/Orchard.Pages/web.config
index 4b80112af..011e2bc6b 100644
--- a/src/Orchard.Web/Modules/Orchard.Pages/web.config
+++ b/src/Orchard.Web/Modules/Orchard.Pages/web.config
@@ -23,8 +23,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Orchard.Projections/Orchard.Projections.csproj b/src/Orchard.Web/Modules/Orchard.Projections/Orchard.Projections.csproj
index b8847d0b5..090c4a82e 100644
--- a/src/Orchard.Web/Modules/Orchard.Projections/Orchard.Projections.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Projections/Orchard.Projections.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -12,7 +12,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.Projections</RootNamespace>
     <AssemblyName>Orchard.Projections</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/Orchard.Projections/Tests/Orchard.Projections.Tests.csproj b/src/Orchard.Web/Modules/Orchard.Projections/Tests/Orchard.Projections.Tests.csproj
index 44ec2a2a3..180b080d9 100644
--- a/src/Orchard.Web/Modules/Orchard.Projections/Tests/Orchard.Projections.Tests.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Projections/Tests/Orchard.Projections.Tests.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
@@ -10,7 +10,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.Projections.Tests</RootNamespace>
     <AssemblyName>Orchard.Projections.Tests</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
     <TargetFrameworkProfile />
   </PropertyGroup>
diff --git a/src/Orchard.Web/Modules/Orchard.Projections/Web.config b/src/Orchard.Web/Modules/Orchard.Projections/Web.config
index 43455591b..4f743649a 100644
--- a/src/Orchard.Web/Modules/Orchard.Projections/Web.config
+++ b/src/Orchard.Web/Modules/Orchard.Projections/Web.config
@@ -23,8 +23,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Orchard.PublishLater/Orchard.PublishLater.csproj b/src/Orchard.Web/Modules/Orchard.PublishLater/Orchard.PublishLater.csproj
index 92c838dad..751c7c441 100644
--- a/src/Orchard.Web/Modules/Orchard.PublishLater/Orchard.PublishLater.csproj
+++ b/src/Orchard.Web/Modules/Orchard.PublishLater/Orchard.PublishLater.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -13,7 +13,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.PublishLater</RootNamespace>
     <AssemblyName>Orchard.PublishLater</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/Orchard.PublishLater/web.config b/src/Orchard.Web/Modules/Orchard.PublishLater/web.config
index 4b80112af..011e2bc6b 100644
--- a/src/Orchard.Web/Modules/Orchard.PublishLater/web.config
+++ b/src/Orchard.Web/Modules/Orchard.PublishLater/web.config
@@ -23,8 +23,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Orchard.Recipes/Orchard.Recipes.csproj b/src/Orchard.Web/Modules/Orchard.Recipes/Orchard.Recipes.csproj
index dde9777da..6b89cbbac 100644
--- a/src/Orchard.Web/Modules/Orchard.Recipes/Orchard.Recipes.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Recipes/Orchard.Recipes.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -13,7 +13,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.Recipes</RootNamespace>
     <AssemblyName>Orchard.Recipes</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <UseIISExpress>false</UseIISExpress>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/Orchard.Recipes/web.config b/src/Orchard.Web/Modules/Orchard.Recipes/web.config
index 4b80112af..011e2bc6b 100644
--- a/src/Orchard.Web/Modules/Orchard.Recipes/web.config
+++ b/src/Orchard.Web/Modules/Orchard.Recipes/web.config
@@ -23,8 +23,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Orchard.Roles/Orchard.Roles.csproj b/src/Orchard.Web/Modules/Orchard.Roles/Orchard.Roles.csproj
index eea643b3a..5d71c9bfb 100644
--- a/src/Orchard.Web/Modules/Orchard.Roles/Orchard.Roles.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Roles/Orchard.Roles.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -12,7 +12,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.Roles</RootNamespace>
     <AssemblyName>Orchard.Roles</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/Orchard.Roles/web.config b/src/Orchard.Web/Modules/Orchard.Roles/web.config
index 4b80112af..011e2bc6b 100644
--- a/src/Orchard.Web/Modules/Orchard.Roles/web.config
+++ b/src/Orchard.Web/Modules/Orchard.Roles/web.config
@@ -23,8 +23,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Orchard.Rules/Orchard.Rules.csproj b/src/Orchard.Web/Modules/Orchard.Rules/Orchard.Rules.csproj
index 382d66780..93e809e30 100644
--- a/src/Orchard.Web/Modules/Orchard.Rules/Orchard.Rules.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Rules/Orchard.Rules.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -12,7 +12,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.Rules</RootNamespace>
     <AssemblyName>Orchard.Rules</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/Orchard.Rules/Web.config b/src/Orchard.Web/Modules/Orchard.Rules/Web.config
index bfd7c4358..eb21d4e26 100644
--- a/src/Orchard.Web/Modules/Orchard.Rules/Web.config
+++ b/src/Orchard.Web/Modules/Orchard.Rules/Web.config
@@ -26,8 +26,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Orchard.Scripting.CSharp/Orchard.Scripting.CSharp.csproj b/src/Orchard.Web/Modules/Orchard.Scripting.CSharp/Orchard.Scripting.CSharp.csproj
index f74f60876..013086f70 100644
--- a/src/Orchard.Web/Modules/Orchard.Scripting.CSharp/Orchard.Scripting.CSharp.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Scripting.CSharp/Orchard.Scripting.CSharp.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -12,7 +12,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.Scripting.CSharp</RootNamespace>
     <AssemblyName>Orchard.Scripting.CSharp</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/Orchard.Scripting.CSharp/Web.config b/src/Orchard.Web/Modules/Orchard.Scripting.CSharp/Web.config
index 43455591b..4f743649a 100644
--- a/src/Orchard.Web/Modules/Orchard.Scripting.CSharp/Web.config
+++ b/src/Orchard.Web/Modules/Orchard.Scripting.CSharp/Web.config
@@ -23,8 +23,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Orchard.Scripting.Dlr/Orchard.Scripting.Dlr.csproj b/src/Orchard.Web/Modules/Orchard.Scripting.Dlr/Orchard.Scripting.Dlr.csproj
index 2ac593dce..2b08b7414 100644
--- a/src/Orchard.Web/Modules/Orchard.Scripting.Dlr/Orchard.Scripting.Dlr.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Scripting.Dlr/Orchard.Scripting.Dlr.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -13,7 +13,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.Scripting.Dlr</RootNamespace>
     <AssemblyName>Orchard.Scripting.Dlr</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <UseIISExpress>false</UseIISExpress>
     <FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/Orchard.Scripting.Dlr/web.config b/src/Orchard.Web/Modules/Orchard.Scripting.Dlr/web.config
index 4b80112af..011e2bc6b 100644
--- a/src/Orchard.Web/Modules/Orchard.Scripting.Dlr/web.config
+++ b/src/Orchard.Web/Modules/Orchard.Scripting.Dlr/web.config
@@ -23,8 +23,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Orchard.Scripting/Orchard.Scripting.csproj b/src/Orchard.Web/Modules/Orchard.Scripting/Orchard.Scripting.csproj
index eff6fd46d..d712e596e 100644
--- a/src/Orchard.Web/Modules/Orchard.Scripting/Orchard.Scripting.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Scripting/Orchard.Scripting.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -13,7 +13,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.Scripting</RootNamespace>
     <AssemblyName>Orchard.Scripting</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <UseIISExpress>false</UseIISExpress>
     <FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/Orchard.Scripting/web.config b/src/Orchard.Web/Modules/Orchard.Scripting/web.config
index 4b80112af..011e2bc6b 100644
--- a/src/Orchard.Web/Modules/Orchard.Scripting/web.config
+++ b/src/Orchard.Web/Modules/Orchard.Scripting/web.config
@@ -23,8 +23,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Orchard.Search/Orchard.Search.csproj b/src/Orchard.Web/Modules/Orchard.Search/Orchard.Search.csproj
index 9a9866313..e8e9fdeee 100644
--- a/src/Orchard.Web/Modules/Orchard.Search/Orchard.Search.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Search/Orchard.Search.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -13,7 +13,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.Search</RootNamespace>
     <AssemblyName>Orchard.Search</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <UseIISExpress>false</UseIISExpress>
     <FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/Orchard.Search/web.config b/src/Orchard.Web/Modules/Orchard.Search/web.config
index 4b80112af..011e2bc6b 100644
--- a/src/Orchard.Web/Modules/Orchard.Search/web.config
+++ b/src/Orchard.Web/Modules/Orchard.Search/web.config
@@ -23,8 +23,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Orchard.SecureSocketsLayer/Orchard.SecureSocketsLayer.csproj b/src/Orchard.Web/Modules/Orchard.SecureSocketsLayer/Orchard.SecureSocketsLayer.csproj
index 9e70d50bd..389e8d6e7 100644
--- a/src/Orchard.Web/Modules/Orchard.SecureSocketsLayer/Orchard.SecureSocketsLayer.csproj
+++ b/src/Orchard.Web/Modules/Orchard.SecureSocketsLayer/Orchard.SecureSocketsLayer.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -12,7 +12,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.SecureSocketsLayer</RootNamespace>
     <AssemblyName>Orchard.SecureSocketsLayer</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/Orchard.SecureSocketsLayer/web.config b/src/Orchard.Web/Modules/Orchard.SecureSocketsLayer/web.config
index fa7172c74..8d941daf7 100644
--- a/src/Orchard.Web/Modules/Orchard.SecureSocketsLayer/web.config
+++ b/src/Orchard.Web/Modules/Orchard.SecureSocketsLayer/web.config
@@ -23,8 +23,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Orchard.Setup/Orchard.Setup.csproj b/src/Orchard.Web/Modules/Orchard.Setup/Orchard.Setup.csproj
index 90c12a9c9..e6b02c59f 100644
--- a/src/Orchard.Web/Modules/Orchard.Setup/Orchard.Setup.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Setup/Orchard.Setup.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -12,7 +12,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.Setup</RootNamespace>
     <AssemblyName>Orchard.Setup</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/Orchard.Setup/web.config b/src/Orchard.Web/Modules/Orchard.Setup/web.config
index 4b80112af..011e2bc6b 100644
--- a/src/Orchard.Web/Modules/Orchard.Setup/web.config
+++ b/src/Orchard.Web/Modules/Orchard.Setup/web.config
@@ -23,8 +23,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Orchard.Tags/Orchard.Tags.csproj b/src/Orchard.Web/Modules/Orchard.Tags/Orchard.Tags.csproj
index e95d8829a..1ac81bc10 100644
--- a/src/Orchard.Web/Modules/Orchard.Tags/Orchard.Tags.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Tags/Orchard.Tags.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -12,7 +12,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.Tags</RootNamespace>
     <AssemblyName>Orchard.Tags</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/Orchard.Tags/web.config b/src/Orchard.Web/Modules/Orchard.Tags/web.config
index 4b80112af..011e2bc6b 100644
--- a/src/Orchard.Web/Modules/Orchard.Tags/web.config
+++ b/src/Orchard.Web/Modules/Orchard.Tags/web.config
@@ -23,8 +23,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Orchard.TaskLease/Orchard.TaskLease.csproj b/src/Orchard.Web/Modules/Orchard.TaskLease/Orchard.TaskLease.csproj
index f6073fc69..72e987018 100644
--- a/src/Orchard.Web/Modules/Orchard.TaskLease/Orchard.TaskLease.csproj
+++ b/src/Orchard.Web/Modules/Orchard.TaskLease/Orchard.TaskLease.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -12,7 +12,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.TaskLease</RootNamespace>
     <AssemblyName>Orchard.TaskLease</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/Orchard.TaskLease/Web.config b/src/Orchard.Web/Modules/Orchard.TaskLease/Web.config
index 43455591b..4f743649a 100644
--- a/src/Orchard.Web/Modules/Orchard.TaskLease/Web.config
+++ b/src/Orchard.Web/Modules/Orchard.TaskLease/Web.config
@@ -23,8 +23,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Orchard.Taxonomies/Orchard.Taxonomies.csproj b/src/Orchard.Web/Modules/Orchard.Taxonomies/Orchard.Taxonomies.csproj
index ddec85471..181b66a0c 100644
--- a/src/Orchard.Web/Modules/Orchard.Taxonomies/Orchard.Taxonomies.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Taxonomies/Orchard.Taxonomies.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -13,7 +13,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.Taxonomies</RootNamespace>
     <AssemblyName>Orchard.Taxonomies</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <UseIISExpress>false</UseIISExpress>
     <FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/Orchard.Taxonomies/web.config b/src/Orchard.Web/Modules/Orchard.Taxonomies/web.config
index af5522377..b36db1fb7 100644
--- a/src/Orchard.Web/Modules/Orchard.Taxonomies/web.config
+++ b/src/Orchard.Web/Modules/Orchard.Taxonomies/web.config
@@ -22,8 +22,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
@@ -32,4 +40,4 @@
       </assemblies>
     </compilation>
   </system.web>
-</configuration>
+</configuration>
\ No newline at end of file
diff --git a/src/Orchard.Web/Modules/Orchard.Templates/Orchard.Templates.csproj b/src/Orchard.Web/Modules/Orchard.Templates/Orchard.Templates.csproj
index 0422cb33e..3a1429e80 100644
--- a/src/Orchard.Web/Modules/Orchard.Templates/Orchard.Templates.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Templates/Orchard.Templates.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -12,7 +12,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.Templates</RootNamespace>
     <AssemblyName>Orchard.Templates</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/Orchard.Templates/Web.config b/src/Orchard.Web/Modules/Orchard.Templates/Web.config
index 42ec1b57c..e3fac61ce 100644
--- a/src/Orchard.Web/Modules/Orchard.Templates/Web.config
+++ b/src/Orchard.Web/Modules/Orchard.Templates/Web.config
@@ -23,8 +23,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Orchard.Themes/Orchard.Themes.csproj b/src/Orchard.Web/Modules/Orchard.Themes/Orchard.Themes.csproj
index 275f12e21..b382a4f84 100644
--- a/src/Orchard.Web/Modules/Orchard.Themes/Orchard.Themes.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Themes/Orchard.Themes.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -12,7 +12,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.Themes</RootNamespace>
     <AssemblyName>Orchard.Themes</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/Orchard.Themes/web.config b/src/Orchard.Web/Modules/Orchard.Themes/web.config
index 4b80112af..011e2bc6b 100644
--- a/src/Orchard.Web/Modules/Orchard.Themes/web.config
+++ b/src/Orchard.Web/Modules/Orchard.Themes/web.config
@@ -23,8 +23,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Orchard.Tokens/Orchard.Tokens.csproj b/src/Orchard.Web/Modules/Orchard.Tokens/Orchard.Tokens.csproj
index 07d638c43..27817f0f6 100644
--- a/src/Orchard.Web/Modules/Orchard.Tokens/Orchard.Tokens.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Tokens/Orchard.Tokens.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -12,7 +12,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.Tokens</RootNamespace>
     <AssemblyName>Orchard.Tokens</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/Orchard.Tokens/Tests/Orchard.Tokens.Tests.csproj b/src/Orchard.Web/Modules/Orchard.Tokens/Tests/Orchard.Tokens.Tests.csproj
index 743d708cb..c1f9a24ed 100644
--- a/src/Orchard.Web/Modules/Orchard.Tokens/Tests/Orchard.Tokens.Tests.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Tokens/Tests/Orchard.Tokens.Tests.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
@@ -10,7 +10,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.Tokens.Tests</RootNamespace>
     <AssemblyName>Orchard.Tokens.Tests</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
     <TargetFrameworkProfile />
   </PropertyGroup>
diff --git a/src/Orchard.Web/Modules/Orchard.Tokens/Web.config b/src/Orchard.Web/Modules/Orchard.Tokens/Web.config
index 43455591b..4f743649a 100644
--- a/src/Orchard.Web/Modules/Orchard.Tokens/Web.config
+++ b/src/Orchard.Web/Modules/Orchard.Tokens/Web.config
@@ -23,8 +23,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Orchard.Users/Orchard.Users.csproj b/src/Orchard.Web/Modules/Orchard.Users/Orchard.Users.csproj
index 076e86d29..b63d52f38 100644
--- a/src/Orchard.Web/Modules/Orchard.Users/Orchard.Users.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Users/Orchard.Users.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -12,7 +12,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.Users</RootNamespace>
     <AssemblyName>Orchard.Users</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/Orchard.Users/web.config b/src/Orchard.Web/Modules/Orchard.Users/web.config
index 4b80112af..011e2bc6b 100644
--- a/src/Orchard.Web/Modules/Orchard.Users/web.config
+++ b/src/Orchard.Web/Modules/Orchard.Users/web.config
@@ -23,8 +23,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Orchard.Warmup/Orchard.Warmup.csproj b/src/Orchard.Web/Modules/Orchard.Warmup/Orchard.Warmup.csproj
index 6a79044a3..7bf0be039 100644
--- a/src/Orchard.Web/Modules/Orchard.Warmup/Orchard.Warmup.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Warmup/Orchard.Warmup.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -12,7 +12,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.Warmup</RootNamespace>
     <AssemblyName>Orchard.Warmup</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/Orchard.Warmup/Web.config b/src/Orchard.Web/Modules/Orchard.Warmup/Web.config
index 43455591b..4f743649a 100644
--- a/src/Orchard.Web/Modules/Orchard.Warmup/Web.config
+++ b/src/Orchard.Web/Modules/Orchard.Warmup/Web.config
@@ -23,8 +23,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Orchard.Widgets/Orchard.Widgets.csproj b/src/Orchard.Web/Modules/Orchard.Widgets/Orchard.Widgets.csproj
index b08c94c5d..7d0ef106c 100644
--- a/src/Orchard.Web/Modules/Orchard.Widgets/Orchard.Widgets.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Widgets/Orchard.Widgets.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -13,7 +13,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.Widgets</RootNamespace>
     <AssemblyName>Orchard.Widgets</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <UseIISExpress>false</UseIISExpress>
     <FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/Orchard.Widgets/web.config b/src/Orchard.Web/Modules/Orchard.Widgets/web.config
index 4b80112af..011e2bc6b 100644
--- a/src/Orchard.Web/Modules/Orchard.Widgets/web.config
+++ b/src/Orchard.Web/Modules/Orchard.Widgets/web.config
@@ -23,8 +23,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Orchard.Workflows/Orchard.Workflows.csproj b/src/Orchard.Web/Modules/Orchard.Workflows/Orchard.Workflows.csproj
index 23f1747a1..16ce05e9c 100644
--- a/src/Orchard.Web/Modules/Orchard.Workflows/Orchard.Workflows.csproj
+++ b/src/Orchard.Web/Modules/Orchard.Workflows/Orchard.Workflows.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -12,7 +12,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.Workflows</RootNamespace>
     <AssemblyName>Orchard.Workflows</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
@@ -65,6 +65,7 @@
     </Reference>
     <Reference Include="System.Web.ApplicationServices" />
     <Reference Include="System.Web.DynamicData" />
+    <Reference Include="System.Web.Entity" />
     <Reference Include="System.Web.Extensions" />
     <Reference Include="System.Web.Mvc, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
diff --git a/src/Orchard.Web/Modules/Orchard.Workflows/Web.config b/src/Orchard.Web/Modules/Orchard.Workflows/Web.config
index 43455591b..4f743649a 100644
--- a/src/Orchard.Web/Modules/Orchard.Workflows/Web.config
+++ b/src/Orchard.Web/Modules/Orchard.Workflows/Web.config
@@ -23,8 +23,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Orchard.jQuery/Orchard.jQuery.csproj b/src/Orchard.Web/Modules/Orchard.jQuery/Orchard.jQuery.csproj
index 4fa46a76b..4aa40aefe 100644
--- a/src/Orchard.Web/Modules/Orchard.jQuery/Orchard.jQuery.csproj
+++ b/src/Orchard.Web/Modules/Orchard.jQuery/Orchard.jQuery.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -12,7 +12,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.jQuery</RootNamespace>
     <AssemblyName>Orchard.jQuery</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/Orchard.jQuery/web.config b/src/Orchard.Web/Modules/Orchard.jQuery/web.config
index 4b80112af..011e2bc6b 100644
--- a/src/Orchard.Web/Modules/Orchard.jQuery/web.config
+++ b/src/Orchard.Web/Modules/Orchard.jQuery/web.config
@@ -23,8 +23,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/SysCache/SysCache.csproj b/src/Orchard.Web/Modules/SysCache/SysCache.csproj
index b30c44ef5..2bb5ade75 100644
--- a/src/Orchard.Web/Modules/SysCache/SysCache.csproj
+++ b/src/Orchard.Web/Modules/SysCache/SysCache.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -12,7 +12,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>SysCache</RootNamespace>
     <AssemblyName>SysCache</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/SysCache/Web.config b/src/Orchard.Web/Modules/SysCache/Web.config
index 844585bdb..326d77553 100644
--- a/src/Orchard.Web/Modules/SysCache/Web.config
+++ b/src/Orchard.Web/Modules/SysCache/Web.config
@@ -23,8 +23,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
@@ -34,12 +42,12 @@
       </assemblies>
     </compilation>
   </system.web>
-	<runtime>
-		<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
-			<dependentAssembly>
-				<assemblyIdentity name="NHibernate" publicKeyToken="AA95F207798DFDB4" culture="neutral"/>
-				<bindingRedirect oldVersion="0.0.0.0-3.3.1.4000" newVersion="3.3.1.4000"/>
-			</dependentAssembly>
-		</assemblyBinding>
-	</runtime>
+  <runtime>
+    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
+      <dependentAssembly>
+        <assemblyIdentity name="NHibernate" publicKeyToken="AA95F207798DFDB4" culture="neutral"/>
+        <bindingRedirect oldVersion="0.0.0.0-3.3.1.4000" newVersion="3.3.1.4000"/>
+      </dependentAssembly>
+    </assemblyBinding>
+  </runtime>
 </configuration>
\ No newline at end of file
diff --git a/src/Orchard.Web/Modules/TinyMce/TinyMce.csproj b/src/Orchard.Web/Modules/TinyMce/TinyMce.csproj
index 0353da8f1..5e07f164a 100644
--- a/src/Orchard.Web/Modules/TinyMce/TinyMce.csproj
+++ b/src/Orchard.Web/Modules/TinyMce/TinyMce.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -12,7 +12,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>TinyMce</RootNamespace>
     <AssemblyName>TinyMce</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.Web/Modules/TinyMce/web.config b/src/Orchard.Web/Modules/TinyMce/web.config
index 4b80112af..011e2bc6b 100644
--- a/src/Orchard.Web/Modules/TinyMce/web.config
+++ b/src/Orchard.Web/Modules/TinyMce/web.config
@@ -23,8 +23,16 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Modules/Upgrade/Upgrade.csproj b/src/Orchard.Web/Modules/Upgrade/Upgrade.csproj
index 224d25f89..dff9cc990 100644
--- a/src/Orchard.Web/Modules/Upgrade/Upgrade.csproj
+++ b/src/Orchard.Web/Modules/Upgrade/Upgrade.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -12,7 +12,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Upgrade</RootNamespace>
     <AssemblyName>Upgrade</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.Web/Orchard.Web.csproj b/src/Orchard.Web/Orchard.Web.csproj
index bd18cb244..ce62a26bf 100644
--- a/src/Orchard.Web/Orchard.Web.csproj
+++ b/src/Orchard.Web/Orchard.Web.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -12,13 +12,14 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.Web</RootNamespace>
     <AssemblyName>Orchard.Web</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <UseIISExpress>true</UseIISExpress>
     <IISExpressSSLPort>44300</IISExpressSSLPort>
     <IISExpressAnonymousAuthentication>enabled</IISExpressAnonymousAuthentication>
     <IISExpressWindowsAuthentication>disabled</IISExpressWindowsAuthentication>
     <IISExpressUseClassicPipelineMode>false</IISExpressUseClassicPipelineMode>
+    <TargetFrameworkProfile />
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
diff --git a/src/Orchard.Web/Themes/Themes.csproj b/src/Orchard.Web/Themes/Themes.csproj
index 6a1dcf558..d3cc5c8d2 100644
--- a/src/Orchard.Web/Themes/Themes.csproj
+++ b/src/Orchard.Web/Themes/Themes.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -12,7 +12,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Themes</RootNamespace>
     <AssemblyName>Themes</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <MvcBuildViews>false</MvcBuildViews>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard.Web/Themes/Web.config b/src/Orchard.Web/Themes/Web.config
index 3cdd99641..cdd039482 100644
--- a/src/Orchard.Web/Themes/Web.config
+++ b/src/Orchard.Web/Themes/Web.config
@@ -26,6 +26,14 @@
       </namespaces>
     </pages>
   </system.web.webPages.razor>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
   <system.web>
     <!--
         Enabling request validation in view pages would cause validation to occur
@@ -39,7 +47,7 @@
         <add assembly="System.Web.Mvc, Version=5.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL" namespace="System.Web.Mvc" tagPrefix="mvc"/>
       </controls>
     </pages>
-    <compilation targetFramework="4.5">
+    <compilation targetFramework="4.5.1">
       <assemblies>
         <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
         <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
diff --git a/src/Orchard.Web/Web.config b/src/Orchard.Web/Web.config
index e9592e794..30c8d20b6 100644
--- a/src/Orchard.Web/Web.config
+++ b/src/Orchard.Web/Web.config
@@ -1,184 +1,176 @@
 <?xml version="1.0"?>
 <configuration>
+  <configSections>
+    <sectionGroup name="system.web.webPages.razor" type="System.Web.WebPages.Razor.Configuration.RazorWebSectionGroup, System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
+      <remove name="host"/>
+      <remove name="pages"/>
+      <section name="host" type="System.Web.WebPages.Razor.Configuration.HostSection, System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false"/>
+      <section name="pages" type="System.Web.WebPages.Razor.Configuration.RazorPagesSection, System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false"/>
+    </sectionGroup>
+  </configSections>
+  <appSettings>
+    <add key="webpages:Enabled" value="false"/>
+    <add key="webpages:Version" value="3.0.0.0"/>
+    <add key="log4net.Config" value="Config\log4net.config"/>
+  </appSettings>
+  <system.web.webPages.razor>
+    <host factoryType="System.Web.Mvc.MvcWebRazorHostFactory, System.Web.Mvc, Version=5.2.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
+    <pages pageBaseType="Orchard.Mvc.ViewEngines.Razor.WebViewPage">
+      <namespaces>
+        <add namespace="System.Collections.Generic"/>
+        <add namespace="System.Linq"/>
+        <add namespace="System.Web.Mvc"/>
+        <add namespace="System.Web.Mvc.Ajax"/>
+        <add namespace="System.Web.Mvc.Html"/>
+        <add namespace="System.Web.Routing"/>
+        <add namespace="System.Web.WebPages"/>
+        <add namespace="Orchard.Mvc.Html"/>
+      </namespaces>
+    </pages>
+  </system.web.webPages.razor>
+  <system.transactions>
+    <defaultSettings timeout="00:30:00"/>
+  </system.transactions>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
 
-    <configSections>
-        <sectionGroup name="system.web.webPages.razor" type="System.Web.WebPages.Razor.Configuration.RazorWebSectionGroup, System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
-            <remove name="host"/>
-            <remove name="pages"/>
-            <section name="host" type="System.Web.WebPages.Razor.Configuration.HostSection, System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false"/>
-            <section name="pages" type="System.Web.WebPages.Razor.Configuration.RazorPagesSection, System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false"/>
-        </sectionGroup>
-    </configSections>
-
-    <appSettings>
-        <add key="webpages:Enabled" value="false"/>
-        <add key="webpages:Version" value="3.0.0.0"/>
-        <add key="log4net.Config" value="Config\log4net.config"/>
-    </appSettings>
-
-    <system.web.webPages.razor>
-        <host factoryType="System.Web.Mvc.MvcWebRazorHostFactory, System.Web.Mvc, Version=5.2.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
-        <pages pageBaseType="Orchard.Mvc.ViewEngines.Razor.WebViewPage">
-            <namespaces>
-                <add namespace="System.Collections.Generic"/>
-                <add namespace="System.Linq"/>
-                <add namespace="System.Web.Mvc"/>
-                <add namespace="System.Web.Mvc.Ajax"/>
-                <add namespace="System.Web.Mvc.Html"/>
-                <add namespace="System.Web.Routing"/>
-                <add namespace="System.Web.WebPages"/>
-                <add namespace="Orchard.Mvc.Html"/>
-            </namespaces>
-        </pages>
-    </system.web.webPages.razor>
-
-    <system.transactions>
-        <defaultSettings timeout="00:30:00"/>
-    </system.transactions>
-
-    <system.web>
-
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.5.1" />
+      </system.Web>
+  -->
+  <system.web>
+    <!-- Accept file uploads up to 64 MB. -->
+    <httpRuntime targetFramework="4.5.1" requestValidationMode="2.0" maxRequestLength="65536"/>
+    <compilation debug="true" targetFramework="4.5.1" batch="true" numRecompilesBeforeAppRestart="250" optimizeCompilations="true">
+      <buildProviders>
+        <add extension=".csproj" type="Orchard.Environment.Extensions.Compilers.CSharpExtensionBuildProviderShim"/>
+      </buildProviders>
+      <assemblies>
+        <add assembly="System.Web.Mvc, Version=5.2.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL"/>
+        <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL"/>
+        <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL"/>
+        <add assembly="System.Data.Linq, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
+        <add assembly="System.Data.Entity, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/>
+        <add assembly="System.Data.Entity.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/>
+        <remove assembly="System.Configuration, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"/>
+        <remove assembly="System.Web, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"/>
+        <remove assembly="System.Data, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/>
+        <remove assembly="System.Web.Services, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"/>
+        <remove assembly="System.Xml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/>
+        <remove assembly="System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"/>
+        <remove assembly="System.EnterpriseServices, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"/>
+        <remove assembly="System.IdentityModel, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/>
+        <remove assembly="System.Runtime.Serialization, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/>
+        <remove assembly="System.ServiceModel, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/>
+        <remove assembly="System.ServiceModel.Activation, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
+        <remove assembly="System.ServiceModel.Web, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
+        <remove assembly="System.Activities, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
+        <remove assembly="System.ServiceModel.Activities, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
+        <remove assembly="System.WorkflowServices, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
+        <remove assembly="System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
+        <remove assembly="System.Data.DataSetExtensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/>
+        <remove assembly="System.Web.ApplicationServices, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
+      </assemblies>
+    </compilation>
+    <authentication mode="Forms">
+      <forms loginUrl="~/Users/Account/AccessDenied" timeout="2880"/>
+    </authentication>
+    <customErrors mode="Off"/>
+    <pages>
+      <namespaces>
+        <add namespace="System.Collections.Generic"/>
+        <add namespace="System.Linq"/>
+        <add namespace="System.Web.Mvc"/>
+        <add namespace="System.Web.Mvc.Ajax"/>
+        <add namespace="System.Web.Mvc.Html"/>
+        <add namespace="System.Web.Routing"/>
+        <add namespace="System.Web.WebPages"/>
+        <add namespace="Orchard.Mvc.Html"/>
+      </namespaces>
+    </pages>
+  </system.web>
+  <system.webServer>
+    <!-- prevent iis from only allowing integrated mode configuration -->
+    <validation validateIntegratedModeConfiguration="false"/>
+    <modules runAllManagedModulesForAllRequests="false">
+      <remove name="WarmupHttpModule"/>
+      <add name="WarmupHttpModule" type="Orchard.WarmupStarter.WarmupHttpModule, Orchard.WarmupStarter, Version=1.8.1, Culture=neutral"/>
+    </modules>
+    <handlers accessPolicy="Script">
+      <!-- Clear all handlers, prevents executing code file extensions or returning any file contents. -->
+      <clear/>
+      <!-- Return 404 for all requests via a managed handler. The URL routing handler will substitute the MVC request handler when routes match. -->
+      <add name="NotFound" path="*" verb="*" type="System.Web.HttpNotFoundHandler" preCondition="integratedMode" requireAccess="Script"/>
+      <!-- WebApi -->
+      <remove name="ExtensionlessUrlHandler-ISAPI-4.0_32bit"/>
+      <remove name="ExtensionlessUrlHandler-ISAPI-4.0_64bit"/>
+      <remove name="ExtensionlessUrlHandler-Integrated-4.0"/>
+      <add name="ExtensionlessUrlHandler-ISAPI-4.0_32bit" path="*." verb="GET,HEAD,POST,DEBUG,PUT,DELETE,PATCH,OPTIONS" modules="IsapiModule" scriptProcessor="%windir%\Microsoft.NET\Framework\v4.0.30319\aspnet_isapi.dll" preCondition="classicMode,runtimeVersionv4.0,bitness32" responseBufferLimit="0"/>
+      <add name="ExtensionlessUrlHandler-ISAPI-4.0_64bit" path="*." verb="GET,HEAD,POST,DEBUG,PUT,DELETE,PATCH,OPTIONS" modules="IsapiModule" scriptProcessor="%windir%\Microsoft.NET\Framework64\v4.0.30319\aspnet_isapi.dll" preCondition="classicMode,runtimeVersionv4.0,bitness64" responseBufferLimit="0"/>
+      <add name="ExtensionlessUrlHandler-Integrated-4.0" path="*." verb="GET,HEAD,POST,DEBUG,PUT,DELETE,PATCH,OPTIONS" type="System.Web.Handlers.TransferRequestHandler" preCondition="integratedMode,runtimeVersionv4.0"/>
+    </handlers>
+    <!-- Prevent IIS 7.0 from returning a custom 404/500 error page of its own. -->
+    <httpErrors existingResponse="PassThrough"/>
+    <security>
+      <requestFiltering>
         <!-- Accept file uploads up to 64 MB. -->
-        <httpRuntime targetFramework="4.5" requestValidationMode="2.0" maxRequestLength="65536"/>
-
-        <compilation debug="true" targetFramework="4.5" batch="true" numRecompilesBeforeAppRestart="250" optimizeCompilations="true">
-            <buildProviders>
-                <add extension=".csproj" type="Orchard.Environment.Extensions.Compilers.CSharpExtensionBuildProviderShim"/>
-            </buildProviders>
-            <assemblies>
-                <add assembly="System.Web.Mvc, Version=5.2.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL"/>
-                <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL"/>
-                <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL"/>
-                <add assembly="System.Data.Linq, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
-                <add assembly="System.Data.Entity, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
-                <add assembly="System.Data.Entity.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
-                <remove assembly="System.Configuration, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"/>
-                <remove assembly="System.Web, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"/>
-                <remove assembly="System.Data, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/>
-                <remove assembly="System.Web.Services, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"/>
-                <remove assembly="System.Xml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/>
-                <remove assembly="System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"/>
-                <remove assembly="System.EnterpriseServices, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"/>
-                <remove assembly="System.IdentityModel, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/>
-                <remove assembly="System.Runtime.Serialization, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/>
-                <remove assembly="System.ServiceModel, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/>
-                <remove assembly="System.ServiceModel.Activation, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
-                <remove assembly="System.ServiceModel.Web, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
-                <remove assembly="System.Activities, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
-                <remove assembly="System.ServiceModel.Activities, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
-                <remove assembly="System.WorkflowServices, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
-                <remove assembly="System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
-                <remove assembly="System.Data.DataSetExtensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/>
-                <remove assembly="System.Web.ApplicationServices, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
-            </assemblies>
-        </compilation>
-
-        <authentication mode="Forms">
-            <forms loginUrl="~/Users/Account/AccessDenied" timeout="2880"/>
-        </authentication>
-
-        <customErrors mode="Off"/>
-
-        <pages>
-            <namespaces>
-                <add namespace="System.Collections.Generic"/>
-                <add namespace="System.Linq"/>
-                <add namespace="System.Web.Mvc"/>
-                <add namespace="System.Web.Mvc.Ajax"/>
-                <add namespace="System.Web.Mvc.Html"/>
-                <add namespace="System.Web.Routing"/>
-                <add namespace="System.Web.WebPages"/>
-                <add namespace="Orchard.Mvc.Html"/>
-            </namespaces>
-        </pages>
-        
-    </system.web>
-
-    <system.webServer>
-        <!-- prevent iis from only allowing integrated mode configuration -->
-        <validation validateIntegratedModeConfiguration="false" />
-
-        <modules runAllManagedModulesForAllRequests="false">
-            <remove name="WarmupHttpModule"/>
-            <add name="WarmupHttpModule" type="Orchard.WarmupStarter.WarmupHttpModule, Orchard.WarmupStarter, Version=1.8.1, Culture=neutral"/>
-        </modules>
-        
-        <handlers accessPolicy="Script">
-            <!-- Clear all handlers, prevents executing code file extensions or returning any file contents. -->
-            <clear/>
-            <!-- Return 404 for all requests via a managed handler. The URL routing handler will substitute the MVC request handler when routes match. -->
-            <add name="NotFound" path="*" verb="*" type="System.Web.HttpNotFoundHandler" preCondition="integratedMode" requireAccess="Script"/>
-            <!-- WebApi -->
-            <remove name="ExtensionlessUrlHandler-ISAPI-4.0_32bit"/>
-            <remove name="ExtensionlessUrlHandler-ISAPI-4.0_64bit"/>
-            <remove name="ExtensionlessUrlHandler-Integrated-4.0"/>
-            <add name="ExtensionlessUrlHandler-ISAPI-4.0_32bit" path="*." verb="GET,HEAD,POST,DEBUG,PUT,DELETE,PATCH,OPTIONS" modules="IsapiModule" scriptProcessor="%windir%\Microsoft.NET\Framework\v4.0.30319\aspnet_isapi.dll" preCondition="classicMode,runtimeVersionv4.0,bitness32" responseBufferLimit="0"/>
-            <add name="ExtensionlessUrlHandler-ISAPI-4.0_64bit" path="*." verb="GET,HEAD,POST,DEBUG,PUT,DELETE,PATCH,OPTIONS" modules="IsapiModule" scriptProcessor="%windir%\Microsoft.NET\Framework64\v4.0.30319\aspnet_isapi.dll" preCondition="classicMode,runtimeVersionv4.0,bitness64" responseBufferLimit="0"/>
-            <add name="ExtensionlessUrlHandler-Integrated-4.0" path="*." verb="GET,HEAD,POST,DEBUG,PUT,DELETE,PATCH,OPTIONS" type="System.Web.Handlers.TransferRequestHandler" preCondition="integratedMode,runtimeVersionv4.0"/>
-        </handlers>
-        <!-- Prevent IIS 7.0 from returning a custom 404/500 error page of its own. -->
-        <httpErrors existingResponse="PassThrough"/>
-        <security>
-            <requestFiltering>
-                <!-- Accept file uploads up to 64 MB. -->
-                <requestLimits maxAllowedContentLength="67108864"/>
-            </requestFiltering>
-        </security>
-    </system.webServer>
-
-    <runtime>
-        <gcServer enabled="true"/>
-        <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
-            <probing privatePath="App_Data/Dependencies"/>
-            <dependentAssembly>
-                <assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35"/>
-                <bindingRedirect oldVersion="0.0.0.0-5.2.0.0" newVersion="5.2.0.0"/>
-            </dependentAssembly>
-            <dependentAssembly>
-                <assemblyIdentity name="System.Web.WebPages" publicKeyToken="31bf3856ad364e35"/>
-                <bindingRedirect oldVersion="0.0.0.0-3.0.0.0" newVersion="3.0.0.0"/>
-            </dependentAssembly>
-            <dependentAssembly>
-                <assemblyIdentity name="System.Web.Razor" publicKeyToken="31bf3856ad364e35"/>
-                <bindingRedirect oldVersion="0.0.0.0-3.0.0.0" newVersion="3.0.0.0"/>
-            </dependentAssembly>
-            <dependentAssembly>
-                <assemblyIdentity name="System.Web.Helpers" publicKeyToken="31bf3856ad364e35"/>
-                <bindingRedirect oldVersion="0.0.0.0-3.0.0.0" newVersion="3.0.0.0"/>
-            </dependentAssembly>
-            <dependentAssembly>
-                <assemblyIdentity name="System.Web.WebPages.Deployment" publicKeyToken="31bf3856ad364e35"/>
-                <bindingRedirect oldVersion="0.0.0.0-3.0.0.0" newVersion="3.0.0.0"/>
-            </dependentAssembly>
-            <dependentAssembly>
-                <assemblyIdentity name="System.Web.WebPages.Razor" publicKeyToken="31bf3856ad364e35"/>
-                <bindingRedirect oldVersion="0.0.0.0-3.0.0.0" newVersion="3.0.0.0"/>
-            </dependentAssembly>
-            <dependentAssembly>
-                <assemblyIdentity name="System.Net.Http.Formatting" publicKeyToken="31bf3856ad364e35" culture="neutral" />
-                <bindingRedirect oldVersion="0.0.0.0-5.1.0.0" newVersion="5.1.0.0" />
-            </dependentAssembly>
-            <dependentAssembly>
-                <assemblyIdentity name="System.Web.Http" publicKeyToken="31bf3856ad364e35" culture="neutral" />
-                <bindingRedirect oldVersion="0.0.0.0-5.1.0.0" newVersion="5.1.0.0" />
-            </dependentAssembly>
-            <dependentAssembly>
-                <assemblyIdentity name="NHibernate" publicKeyToken="aa95f207798dfdb4" culture="neutral"/>
-                <bindingRedirect oldVersion="0.0.0.0-3.3.1.4000" newVersion="3.3.1.4000"/>
-            </dependentAssembly>
-            <dependentAssembly>
-                <assemblyIdentity name="Autofac" publicKeyToken="17863af14b0044da"/>
-                <bindingRedirect oldVersion="2.2.0.0-2.6.3.862" newVersion="3.0.0.0"/>
-            </dependentAssembly>
-            <dependentAssembly>
-                <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed"/>
-                <bindingRedirect oldVersion="0.0.0.0-6.0.0.0" newVersion="6.0.0.0"/>
-            </dependentAssembly>
-            <dependentAssembly>
-                <assemblyIdentity name="Microsoft.WindowsAzure.Storage" publicKeyToken="31bf3856ad364e35" culture="neutral"/>
-                <bindingRedirect oldVersion="0.0.0.0-3.1.0.0" newVersion="3.1.0.0"/>
-            </dependentAssembly>
-        </assemblyBinding>
-    </runtime>
-
+        <requestLimits maxAllowedContentLength="67108864"/>
+      </requestFiltering>
+    </security>
+  </system.webServer>
+  <runtime>
+    <gcServer enabled="true"/>
+    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
+      <probing privatePath="App_Data/Dependencies"/>
+      <dependentAssembly>
+        <assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35"/>
+        <bindingRedirect oldVersion="0.0.0.0-5.2.0.0" newVersion="5.2.0.0"/>
+      </dependentAssembly>
+      <dependentAssembly>
+        <assemblyIdentity name="System.Web.WebPages" publicKeyToken="31bf3856ad364e35"/>
+        <bindingRedirect oldVersion="0.0.0.0-3.0.0.0" newVersion="3.0.0.0"/>
+      </dependentAssembly>
+      <dependentAssembly>
+        <assemblyIdentity name="System.Web.Razor" publicKeyToken="31bf3856ad364e35"/>
+        <bindingRedirect oldVersion="0.0.0.0-3.0.0.0" newVersion="3.0.0.0"/>
+      </dependentAssembly>
+      <dependentAssembly>
+        <assemblyIdentity name="System.Web.Helpers" publicKeyToken="31bf3856ad364e35"/>
+        <bindingRedirect oldVersion="0.0.0.0-3.0.0.0" newVersion="3.0.0.0"/>
+      </dependentAssembly>
+      <dependentAssembly>
+        <assemblyIdentity name="System.Web.WebPages.Deployment" publicKeyToken="31bf3856ad364e35"/>
+        <bindingRedirect oldVersion="0.0.0.0-3.0.0.0" newVersion="3.0.0.0"/>
+      </dependentAssembly>
+      <dependentAssembly>
+        <assemblyIdentity name="System.Web.WebPages.Razor" publicKeyToken="31bf3856ad364e35"/>
+        <bindingRedirect oldVersion="0.0.0.0-3.0.0.0" newVersion="3.0.0.0"/>
+      </dependentAssembly>
+      <dependentAssembly>
+        <assemblyIdentity name="System.Net.Http.Formatting" publicKeyToken="31bf3856ad364e35" culture="neutral"/>
+        <bindingRedirect oldVersion="0.0.0.0-5.1.0.0" newVersion="5.1.0.0"/>
+      </dependentAssembly>
+      <dependentAssembly>
+        <assemblyIdentity name="System.Web.Http" publicKeyToken="31bf3856ad364e35" culture="neutral"/>
+        <bindingRedirect oldVersion="0.0.0.0-5.1.0.0" newVersion="5.1.0.0"/>
+      </dependentAssembly>
+      <dependentAssembly>
+        <assemblyIdentity name="NHibernate" publicKeyToken="aa95f207798dfdb4" culture="neutral"/>
+        <bindingRedirect oldVersion="0.0.0.0-3.3.1.4000" newVersion="3.3.1.4000"/>
+      </dependentAssembly>
+      <dependentAssembly>
+        <assemblyIdentity name="Autofac" publicKeyToken="17863af14b0044da"/>
+        <bindingRedirect oldVersion="2.2.0.0-2.6.3.862" newVersion="3.0.0.0"/>
+      </dependentAssembly>
+      <dependentAssembly>
+        <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed"/>
+        <bindingRedirect oldVersion="0.0.0.0-6.0.0.0" newVersion="6.0.0.0"/>
+      </dependentAssembly>
+      <dependentAssembly>
+        <assemblyIdentity name="Microsoft.WindowsAzure.Storage" publicKeyToken="31bf3856ad364e35" culture="neutral"/>
+        <bindingRedirect oldVersion="0.0.0.0-3.1.0.0" newVersion="3.1.0.0"/>
+      </dependentAssembly>
+    </assemblyBinding>
+  </runtime>
 </configuration>
\ No newline at end of file
diff --git a/src/Orchard/Orchard.Framework.csproj b/src/Orchard/Orchard.Framework.csproj
index d361bbc10..a94c25bbe 100644
--- a/src/Orchard/Orchard.Framework.csproj
+++ b/src/Orchard/Orchard.Framework.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
@@ -10,7 +10,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard</RootNamespace>
     <AssemblyName>Orchard.Framework</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Orchard/app.config b/src/Orchard/app.config
index 9cc799e14..6d294655a 100644
--- a/src/Orchard/app.config
+++ b/src/Orchard/app.config
@@ -8,4 +8,4 @@
 			</dependentAssembly>
 		</assemblyBinding>
 	</runtime>
-<startup><supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5"/></startup></configuration>
+<startup><supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5.1"/></startup></configuration>
diff --git a/src/Tools/MSBuild.Orchard.Tasks/MSBuild.Orchard.Tasks.csproj b/src/Tools/MSBuild.Orchard.Tasks/MSBuild.Orchard.Tasks.csproj
index dd86ce56e..6c6a94ab2 100644
--- a/src/Tools/MSBuild.Orchard.Tasks/MSBuild.Orchard.Tasks.csproj
+++ b/src/Tools/MSBuild.Orchard.Tasks/MSBuild.Orchard.Tasks.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
@@ -10,7 +10,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>MSBuild.Orchard.Tasks</RootNamespace>
     <AssemblyName>MSBuild.Orchard.Tasks</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Tools/Orchard.Tests/Orchard.Tests.csproj b/src/Tools/Orchard.Tests/Orchard.Tests.csproj
index f0515f318..503884cb3 100644
--- a/src/Tools/Orchard.Tests/Orchard.Tests.csproj
+++ b/src/Tools/Orchard.Tests/Orchard.Tests.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
@@ -10,7 +10,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard.Tests</RootNamespace>
     <AssemblyName>Orchard.Tests</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Tools/Orchard/Orchard.csproj b/src/Tools/Orchard/Orchard.csproj
index b4e6a1f25..1ad86a6ca 100644
--- a/src/Tools/Orchard/Orchard.csproj
+++ b/src/Tools/Orchard/Orchard.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
@@ -10,7 +10,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>Orchard</RootNamespace>
     <AssemblyName>Orchard</AssemblyName>
-    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
     <FileUpgradeFlags>
     </FileUpgradeFlags>
diff --git a/src/Tools/Orchard/app.config b/src/Tools/Orchard/app.config
index f83b6bcc2..f29d91874 100644
--- a/src/Tools/Orchard/app.config
+++ b/src/Tools/Orchard/app.config
@@ -1,6 +1,6 @@
 <?xml version="1.0"?>
 <configuration>
   <startup>
-    <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5"/>
+    <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5.1"/>
   </startup>
 </configuration>