diff --git a/src/FSharpSource.Settings.targets b/src/FSharpSource.Settings.targets
index e9c969170d2..455357f0a2c 100644
--- a/src/FSharpSource.Settings.targets
+++ b/src/FSharpSource.Settings.targets
@@ -5,7 +5,8 @@
     <!-- Tail calls on, even in debug -->
     <Tailcalls>true</Tailcalls>
     <TargetFramework Condition="'$(TargetFramework)'==''">net40</TargetFramework>
-    <!-- For .NET 2.0 use a 2.0 proto compiler, otherwise use a 4.0 proto compiler -->
+
+    <!-- Use a net40 proto compiler -->
     <protoCLIDir Condition="'$(protoCLIDir)' == ''">net40</protoCLIDir>
     <LkgVersion>14.0.23413.0</LkgVersion>
     <FsLexUnicode>true</FsLexUnicode>
@@ -15,6 +16,8 @@
     <ToolsDir>$(MSBuildThisFileDirectory)..\Tools\</ToolsDir>
     <BuildToolsTaskDir>$(ToolsDir)net45\</BuildToolsTaskDir>
     <WarningsAsErrors />
+    <DeployExtension>false</DeployExtension>
+
     <FX_NO_LOADER Condition=" '$(FX_NO_LOADER)'==''">false</FX_NO_LOADER>
   </PropertyGroup>
 
diff --git a/vsintegration/Vsix/VisualFSharpDesktop/Source.extension.vsixmanifest b/vsintegration/Vsix/VisualFSharpDesktop/Source.extension.vsixmanifest
index ed704d87a0f..76483db7fa1 100644
--- a/vsintegration/Vsix/VisualFSharpDesktop/Source.extension.vsixmanifest
+++ b/vsintegration/Vsix/VisualFSharpDesktop/Source.extension.vsixmanifest
@@ -59,4 +59,7 @@
     <Asset Type="Microsoft.VisualStudio.MefComponent" d:Source="Project" d:ProjectName="FSharp.Editor" Path="|FSharp.Editor|" AssemblyName="|FSharp.Editor;AssemblyName|" />
     <Asset Type="Microsoft.VisualStudio.Analyzer" d:Source="Project" d:ProjectName="FSharp.Editor" Path="|FSharp.Editor|" />
   </Assets>
+  <Prerequisites>
+    <Prerequisite Id="Microsoft.VisualStudio.Component.CoreEditor" Version="[15.0,16.0)" DisplayName="Visual Studio core editor" />
+  </Prerequisites>
 </PackageManifest>
\ No newline at end of file
diff --git a/vsintegration/Vsix/VisualFSharpFull/Source.extension.vsixmanifest b/vsintegration/Vsix/VisualFSharpFull/Source.extension.vsixmanifest
index e64a9668232..959a6417827 100644
--- a/vsintegration/Vsix/VisualFSharpFull/Source.extension.vsixmanifest
+++ b/vsintegration/Vsix/VisualFSharpFull/Source.extension.vsixmanifest
@@ -63,4 +63,7 @@
     <Asset Type="Microsoft.VisualStudio.MefComponent" d:Source="Project" d:ProjectName="FSharp.Editor" Path="|FSharp.Editor|" AssemblyName="|FSharp.Editor;AssemblyName|" />
     <Asset Type="Microsoft.VisualStudio.Analyzer" d:Source="Project" d:ProjectName="FSharp.Editor" Path="|FSharp.Editor|" />
   </Assets>
+  <Prerequisites>
+    <Prerequisite Id="Microsoft.VisualStudio.Component.CoreEditor" Version="[15.0,16.0)" DisplayName="Visual Studio core editor" />
+  </Prerequisites>
 </PackageManifest>
\ No newline at end of file
diff --git a/vsintegration/Vsix/VisualFSharpOpenSource/Source.extension.vsixmanifest b/vsintegration/Vsix/VisualFSharpOpenSource/Source.extension.vsixmanifest
index 24a4f84aadf..e20c8224715 100644
--- a/vsintegration/Vsix/VisualFSharpOpenSource/Source.extension.vsixmanifest
+++ b/vsintegration/Vsix/VisualFSharpOpenSource/Source.extension.vsixmanifest
@@ -63,4 +63,7 @@
     <Asset Type="Microsoft.VisualStudio.MefComponent" d:Source="Project" d:ProjectName="FSharp.Editor" Path="|FSharp.Editor|" AssemblyName="|FSharp.Editor;AssemblyName|" />
     <Asset Type="Microsoft.VisualStudio.Analyzer" d:Source="Project" d:ProjectName="FSharp.Editor" Path="|FSharp.Editor|" />
   </Assets>
+  <Prerequisites>
+    <Prerequisite Id="Microsoft.VisualStudio.Component.CoreEditor" Version="[15.0,16.0)" DisplayName="Visual Studio core editor" />
+  </Prerequisites>
 </PackageManifest>
\ No newline at end of file
diff --git a/vsintegration/Vsix/VisualFSharpWeb/Source.extension.vsixmanifest b/vsintegration/Vsix/VisualFSharpWeb/Source.extension.vsixmanifest
index 25e4f423a7b..74417f509ce 100644
--- a/vsintegration/Vsix/VisualFSharpWeb/Source.extension.vsixmanifest
+++ b/vsintegration/Vsix/VisualFSharpWeb/Source.extension.vsixmanifest
@@ -57,4 +57,7 @@
     <Asset Type="Microsoft.VisualStudio.MefComponent" d:Source="Project" d:ProjectName="FSharp.Editor" Path="|FSharp.Editor|" AssemblyName="|FSharp.Editor;AssemblyName|" />
     <Asset Type="Microsoft.VisualStudio.Analyzer" d:Source="Project" d:ProjectName="FSharp.Editor" Path="|FSharp.Editor|" />
   </Assets>
+  <Prerequisites>
+    <Prerequisite Id="Microsoft.VisualStudio.Component.CoreEditor" Version="[15.0,16.0)" DisplayName="Visual Studio core editor" />
+  </Prerequisites>
 </PackageManifest>
\ No newline at end of file