diff --git a/src/Installers/Windows/AspNetCoreModule-Setup/CustomAction/aspnetcoreCA.vcxproj b/src/Installers/Windows/AspNetCoreModule-Setup/CustomAction/aspnetcoreCA.vcxproj
index ec30e8b311ac..9b6ce27765ba 100644
--- a/src/Installers/Windows/AspNetCoreModule-Setup/CustomAction/aspnetcoreCA.vcxproj
+++ b/src/Installers/Windows/AspNetCoreModule-Setup/CustomAction/aspnetcoreCA.vcxproj
@@ -63,7 +63,7 @@
       <SDLCheck>true</SDLCheck>
       <AdditionalIncludeDirectories>$(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <MultiProcessorCompilation>true</MultiProcessorCompilation>
-      <AdditionalOptions>/guard:cf</AdditionalOptions>
+      <AdditionalOptions>/guard:cf /Qspectre</AdditionalOptions>
     </ClCompile>
     <Link>
       <AdditionalDependencies>httpapi.lib;shlwapi.lib;ahadmin.lib;xmllite.lib;msi.lib;Version.lib;kernel32.lib;user32.lib;gdi32.lib;winspool.lib;comdlg32.lib;advapi32.lib;shell32.lib;ole32.lib;oleaut32.lib;uuid.lib;odbc32.lib;odbccp32.lib;%(AdditionalDependencies)</AdditionalDependencies>
diff --git a/src/Installers/Windows/AspNetCoreModule-Setup/build/settings/common.props b/src/Installers/Windows/AspNetCoreModule-Setup/build/settings/common.props
index e826eb6b3e95..615736764578 100644
--- a/src/Installers/Windows/AspNetCoreModule-Setup/build/settings/common.props
+++ b/src/Installers/Windows/AspNetCoreModule-Setup/build/settings/common.props
@@ -27,7 +27,7 @@
       <!-- See https://github.com/dotnet/aspnetcore/issues/40525 -->
       <WarningLevel>Level4</WarningLevel>
       <TreatSpecificWarningsAsErrors>$(TreatSpecificWarningsAsErrors);4018;4055;4146;4242;4244;4267;4302;4308;4509;4510;4532;4533;4610;4611;4700;4701;4703;4789;4995;4996</TreatSpecificWarningsAsErrors>
-      <AdditionalOptions>/guard:cf</AdditionalOptions>
+      <AdditionalOptions>/guard:cf /Qspectre</AdditionalOptions>
     </ClCompile>
   </ItemDefinitionGroup>
 
diff --git a/src/Servers/IIS/AspNetCoreModuleV2/AspNetCore/AspNetCore.vcxproj b/src/Servers/IIS/AspNetCoreModuleV2/AspNetCore/AspNetCore.vcxproj
index 66900a39b1ad..11a048962cde 100644
--- a/src/Servers/IIS/AspNetCoreModuleV2/AspNetCore/AspNetCore.vcxproj
+++ b/src/Servers/IIS/AspNetCoreModuleV2/AspNetCore/AspNetCore.vcxproj
@@ -16,7 +16,7 @@
     <ClCompile>
       <PreprocessorDefinitions>_USRDLL;ASPNETCOREMODULE_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <AdditionalIncludeDirectories>..\IISLib;.\Inc;..\CommonLib;$(LibNetHostPath)</AdditionalIncludeDirectories>
-      <AdditionalOptions>/guard:cf</AdditionalOptions>
+      <AdditionalOptions>/guard:cf /Qspectre</AdditionalOptions>
     </ClCompile>
     <Link>
       <AdditionalDependencies>kernel32.lib;user32.lib;advapi32.lib;shell32.lib;ole32.lib;oleaut32.lib;uuid.lib;ahadmin.lib;ws2_32.lib;iphlpapi.lib;version.lib;libnethost.lib</AdditionalDependencies>
diff --git a/src/Servers/IIS/AspNetCoreModuleV2/InProcessRequestHandler/InProcessRequestHandler.vcxproj b/src/Servers/IIS/AspNetCoreModuleV2/InProcessRequestHandler/InProcessRequestHandler.vcxproj
index f6cfbb517878..f37bd6a5685b 100644
--- a/src/Servers/IIS/AspNetCoreModuleV2/InProcessRequestHandler/InProcessRequestHandler.vcxproj
+++ b/src/Servers/IIS/AspNetCoreModuleV2/InProcessRequestHandler/InProcessRequestHandler.vcxproj
@@ -16,7 +16,7 @@
     <ClCompile>
       <PreprocessorDefinitions>REQUESTHANDLER_EXPORTS;_USRDLL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <AdditionalIncludeDirectories>..\IISLib;..\CommonLib;.\Inc;..\RequestHandlerLib</AdditionalIncludeDirectories>
-      <AdditionalOptions>/guard:cf</AdditionalOptions>
+      <AdditionalOptions>/guard:cf /Qspectre</AdditionalOptions>
     </ClCompile>
     <Link>
       <AdditionalDependencies>kernel32.lib;user32.lib;advapi32.lib;shell32.lib;ole32.lib;oleaut32.lib;uuid.lib;ahadmin.lib;ws2_32.lib;iphlpapi.lib;version.lib;$(LibNetHostPath)\libnethost.lib</AdditionalDependencies>
diff --git a/src/Servers/IIS/AspNetCoreModuleV2/OutOfProcessRequestHandler/OutOfProcessRequestHandler.vcxproj b/src/Servers/IIS/AspNetCoreModuleV2/OutOfProcessRequestHandler/OutOfProcessRequestHandler.vcxproj
index c3d321ff0411..42d7048c4af2 100644
--- a/src/Servers/IIS/AspNetCoreModuleV2/OutOfProcessRequestHandler/OutOfProcessRequestHandler.vcxproj
+++ b/src/Servers/IIS/AspNetCoreModuleV2/OutOfProcessRequestHandler/OutOfProcessRequestHandler.vcxproj
@@ -16,7 +16,7 @@
     <ClCompile>
       <PreprocessorDefinitions>REQUESTHANDLER_EXPORTS;_USRDLL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <AdditionalIncludeDirectories>..\IISLib;..\CommonLib;.\Inc;..\RequestHandlerLib</AdditionalIncludeDirectories>
-      <AdditionalOptions>/guard:cf</AdditionalOptions>
+      <AdditionalOptions>/guard:cf /Qspectre</AdditionalOptions>
     </ClCompile>
     <Link>
 <AdditionalDependencies>kernel32.lib;user32.lib;advapi32.lib;shell32.lib;ole32.lib;oleaut32.lib;uuid.lib;ahadmin.lib;ws2_32.lib;iphlpapi.lib;version.lib;Rpcrt4.lib;winhttp.lib</AdditionalDependencies>