diff --git a/src/SourceBuild/content/repo-projects/aspnetcore.proj b/src/SourceBuild/content/repo-projects/aspnetcore.proj
index 90221b9c57ff..23b97ea1b3b4 100644
--- a/src/SourceBuild/content/repo-projects/aspnetcore.proj
+++ b/src/SourceBuild/content/repo-projects/aspnetcore.proj
@@ -5,6 +5,7 @@
     <BuildScript>$(ProjectDirectory)eng\build$(ShellExtension)</BuildScript>
 
     <BuildActions Condition="'$(DotNetBuildSourceOnly)' != 'true'">$(FlagParameterPrefix)restore $(FlagParameterPrefix)all $(FlagParameterPrefix)pack $(FlagParameterPrefix)publish</BuildActions>
+    <BuildActions Condition="'$(Sign)' == 'true'">$(BuildActions) $(FlagParameterPrefix)sign</BuildActions>
     <!-- On windows, native tooling (JDK) is pre-installed on the machine. -->
     <BuildActions Condition="'$(BuildOS)' == 'windows'">$(BuildActions) -NativeToolsOnMachine</BuildActions>
     <!-- On non-windows, we don't have the JDK available and don't need to build those projects anyway because they are not consumed downstream. -->
diff --git a/src/SourceBuild/content/repo-projects/fsharp.proj b/src/SourceBuild/content/repo-projects/fsharp.proj
index b0b4db94ce37..1070e88b9430 100644
--- a/src/SourceBuild/content/repo-projects/fsharp.proj
+++ b/src/SourceBuild/content/repo-projects/fsharp.proj
@@ -8,6 +8,10 @@
 
     <!-- Restore and Build actions are already passed in by the root script. -->
     <BuildActions>$(FlagParameterPrefix)pack $(FlagParameterPrefix)publish</BuildActions>
+    <BuildActions Condition="'$(Sign)' == 'true'">$(BuildActions) $(FlagParameterPrefix)sign</BuildActions>
+    
+    <!-- noVisualStudio build action must be passed if building with Core MSBuild on Windows. -->
+    <BuildActions Condition="'$(BuildOS)' == 'windows' and '$(ForceDotNetMSBuildEngine)' != 'false'">$(BuildActions) $(FlagParameterPrefix)noVisualStudio</BuildActions>
 
     <BuildArgs>$(BuildArgs) /p:TreatWarningsAsErrors=false</BuildArgs>
     <BuildArgs>$(BuildArgs) /p:GenerateResourceUsePreserializedResources=true</BuildArgs>
diff --git a/src/SourceBuild/content/repo-projects/roslyn.proj b/src/SourceBuild/content/repo-projects/roslyn.proj
index 0d7b27c74b62..36a0b85db7e3 100644
--- a/src/SourceBuild/content/repo-projects/roslyn.proj
+++ b/src/SourceBuild/content/repo-projects/roslyn.proj
@@ -7,6 +7,7 @@
     <BuildActions Condition="'$(BuildOS)' == 'windows'">$(FlagParameterPrefix)restore</BuildActions>
     <BuildActions Condition="'$(BuildOS)' == 'windows'">$(BuildActions) $(FlagParameterPrefix)pack</BuildActions>
     <BuildActions Condition="'$(BuildOS)' == 'windows'">$(BuildActions) $(FlagParameterPrefix)publish</BuildActions>
+    <BuildActions Condition="'$(BuildOS)' == 'windows' and '$(Sign)' == 'true'">$(BuildActions) $(FlagParameterPrefix)sign</BuildActions>
 
     <!-- Use the repo root build script -->
     <BuildScript>$(ProjectDirectory)build$(ShellExtension)</BuildScript>