diff --git a/src/Interactive/HostProcess/InteractiveHost32.csproj b/src/Interactive/HostProcess/InteractiveHost32.csproj
index 7c17a830d384bcbae78369afbdb0f1a5c77c1e8b..daf4d811d3b299831e00356068cc3598e25c41da 100644
--- a/src/Interactive/HostProcess/InteractiveHost32.csproj
+++ b/src/Interactive/HostProcess/InteractiveHost32.csproj
@@ -31,7 +31,7 @@
         <Ngen>true</Ngen>
         <NgenPriority>3</NgenPriority>
         <NgenArchitecture>X86</NgenArchitecture>
-        <NgenApplication>/InteractiveHost/Desktop/InteractiveHost32.exe</NgenApplication>
+        <NgenApplication>[installDir]\Common7\IDE\$(CommonExtensionInstallationRoot)\$(LanguageServicesExtensionInstallationFolder)\InteractiveHost\Desktop\InteractiveHost32.exe</NgenApplication>
       </_PublishProjectOutputGroup>
       <_PublishProjectOutputGroup Include="$(TargetPath).config" TargetPath="$(TargetFileName).config"/>
     </ItemGroup>
diff --git a/src/Interactive/HostProcess/InteractiveHost64.csproj b/src/Interactive/HostProcess/InteractiveHost64.csproj
index d0db53fc5e6b5d8ed92c8779fe52ea3168d1acdb..9cc2117dfd7bca0b7569de6b0bbe505e04015e5e 100644
--- a/src/Interactive/HostProcess/InteractiveHost64.csproj
+++ b/src/Interactive/HostProcess/InteractiveHost64.csproj
@@ -41,7 +41,7 @@
         <NgenPriority>3</NgenPriority>
         <NgenArchitecture Condition="'%(Filename)' != 'InteractiveHost64'">All</NgenArchitecture>
         <NgenArchitecture Condition="'%(Filename)' == 'InteractiveHost64'">X64</NgenArchitecture>
-        <NgenApplication>/InteractiveHost/Desktop/InteractiveHost64.exe</NgenApplication>
+        <NgenApplication>[installDir]\Common7\IDE\$(CommonExtensionInstallationRoot)\$(LanguageServicesExtensionInstallationFolder)\InteractiveHost\Desktop\InteractiveHost64.exe</NgenApplication>
       </_PublishedFiles>
     </ItemGroup>
   </Target>
diff --git a/src/Interactive/HostTest/InteractiveHost.UnitTests.csproj b/src/Interactive/HostTest/InteractiveHost.UnitTests.csproj
index 16f16cdeda57634d67c15e0d33c948a116322f59..ff3dcc01cf322d3e90d7c9bae60a0eb9de539e05 100644
--- a/src/Interactive/HostTest/InteractiveHost.UnitTests.csproj
+++ b/src/Interactive/HostTest/InteractiveHost.UnitTests.csproj
@@ -24,10 +24,13 @@
     <!--
       Not using ProjectReference since it does not execute the specified targets when building in VS.
       See https://github.com/microsoft/msbuild/issues/5434.
+
+      Note: do not set TargetFramework=net472 for InteractiveHost32. The project is not multi-targeted.
+      Setting the property would create a build configuration that's different from the one the solution uses
+      and thus would result in building the project twice.
     -->
     
     <CopyPublishedOutputProjectReference Include="..\HostProcess\InteractiveHost32.csproj">
-      <SetTargetFramework>TargetFramework=net472</SetTargetFramework>
       <OutputItemType>InteractiveHostFiles_Desktop32</OutputItemType>
     </CopyPublishedOutputProjectReference>
 
diff --git a/src/VisualStudio/Setup/Roslyn.VisualStudio.Setup.csproj b/src/VisualStudio/Setup/Roslyn.VisualStudio.Setup.csproj
index 8150f3dad138d1d71db8797e69c033062ae750d8..ff33f3d48416005d59dbd6326f326bd1b1a334d8 100644
--- a/src/VisualStudio/Setup/Roslyn.VisualStudio.Setup.csproj
+++ b/src/VisualStudio/Setup/Roslyn.VisualStudio.Setup.csproj
@@ -295,8 +295,11 @@
     <ProjectReference Include="..\..\Interactive\HostProcess\InteractiveHost32.csproj">
       <Name>InteractiveHost.Desktop32</Name>
 
-      <SetTargetFramework>TargetFramework=net472</SetTargetFramework>
-      <SkipGetTargetFrameworkProperties>true</SkipGetTargetFrameworkProperties>
+      <!--
+        Note: do not set TargetFramework=net472 for InteractiveHost32. The project is not multi-targeted.
+        Setting the property would create a build configuration that's different from the one the solution uses
+        and thus would result in building the project twice.
+      -->
       <ReferenceOutputAssembly>false</ReferenceOutputAssembly>
 
       <Private>false</Private>