diff --git a/SampleApps/WebView2APISample/WebView2APISample.vcxproj b/SampleApps/WebView2APISample/WebView2APISample.vcxproj
index 5513a15d..25807ebb 100644
--- a/SampleApps/WebView2APISample/WebView2APISample.vcxproj
+++ b/SampleApps/WebView2APISample/WebView2APISample.vcxproj
@@ -126,7 +126,8 @@
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
       <Optimization>Disabled</Optimization>
       <LanguageStandard>stdcpp17</LanguageStandard>
-    </ClCompile>
+	  <MultiProcessorCompilation>true</MultiProcessorCompilation>
+	</ClCompile>
     <Link>
       <TargetMachine>MachineX86</TargetMachine>
       <GenerateDebugInformation>true</GenerateDebugInformation>
@@ -144,7 +145,8 @@
       <WarningLevel>Level3</WarningLevel>
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
       <LanguageStandard>stdcpp17</LanguageStandard>
-    </ClCompile>
+	  <MultiProcessorCompilation>true</MultiProcessorCompilation>
+	</ClCompile>
     <Link>
       <TargetMachine>MachineX86</TargetMachine>
       <GenerateDebugInformation>true</GenerateDebugInformation>
@@ -160,7 +162,8 @@
       <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
       <LanguageStandard>stdcpp17</LanguageStandard>
       <PreprocessorDefinitions>USE_WEBVIEW2_WIN10;_UNICODE;UNICODE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-    </ClCompile>
+	  <MultiProcessorCompilation>true</MultiProcessorCompilation>
+	</ClCompile>
     <Link>
       <AdditionalDependencies>kernel32.lib;user32.lib;gdi32.lib;winspool.lib;comdlg32.lib;advapi32.lib;shell32.lib;shlwapi.lib;ole32.lib;oleaut32.lib;uuid.lib;odbc32.lib;odbccp32.lib;urlmon.lib;Gdiplus.lib;%(AdditionalDependencies)</AdditionalDependencies>
       <AdditionalOptions>onecoreuap.lib %(AdditionalOptions)</AdditionalOptions>
@@ -171,7 +174,8 @@
       <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
       <LanguageStandard>stdcpp17</LanguageStandard>
       <PreprocessorDefinitions>USE_WEBVIEW2_WIN10;_UNICODE;UNICODE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-    </ClCompile>
+	  <MultiProcessorCompilation>true</MultiProcessorCompilation>
+	</ClCompile>
     <Link>
       <AdditionalDependencies>kernel32.lib;user32.lib;gdi32.lib;winspool.lib;comdlg32.lib;advapi32.lib;shell32.lib;shlwapi.lib;ole32.lib;oleaut32.lib;uuid.lib;odbc32.lib;odbccp32.lib;urlmon.lib;Gdiplus.lib;%(AdditionalDependencies)</AdditionalDependencies>
       <LinkTimeCodeGeneration>
@@ -184,7 +188,8 @@
       <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
       <LanguageStandard>stdcpp17</LanguageStandard>
       <PreprocessorDefinitions>USE_WEBVIEW2_WIN10;_ARM64_WINAPI_PARTITION_DESKTOP_SDK_AVAILABLE=1;%(ClCompile.PreprocessorDefinitions)</PreprocessorDefinitions>
-    </ClCompile>
+	  <MultiProcessorCompilation>true</MultiProcessorCompilation>
+	</ClCompile>
     <Link>
       <AdditionalDependencies>kernel32.lib;user32.lib;gdi32.lib;winspool.lib;comdlg32.lib;advapi32.lib;shell32.lib;shlwapi.lib;ole32.lib;oleaut32.lib;uuid.lib;odbc32.lib;odbccp32.lib;urlmon.lib;Gdiplus.lib;%(AdditionalDependencies)</AdditionalDependencies>
       <AdditionalOptions>onecoreuap.lib %(AdditionalOptions)</AdditionalOptions>
@@ -195,7 +200,8 @@
       <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
       <LanguageStandard>stdcpp17</LanguageStandard>
       <PreprocessorDefinitions>USE_WEBVIEW2_WIN10;_ARM64_WINAPI_PARTITION_DESKTOP_SDK_AVAILABLE=1;%(ClCompile.PreprocessorDefinitions)</PreprocessorDefinitions>
-    </ClCompile>
+      <MultiProcessorCompilation>true</MultiProcessorCompilation>
+	</ClCompile>
     <Link>
       <AdditionalDependencies>kernel32.lib;user32.lib;gdi32.lib;winspool.lib;comdlg32.lib;advapi32.lib;shell32.lib;shlwapi.lib;ole32.lib;oleaut32.lib;uuid.lib;odbc32.lib;odbccp32.lib;urlmon.lib;Gdiplus.lib;%(AdditionalDependencies)</AdditionalDependencies>
       <AdditionalOptions>onecoreuap.lib %(AdditionalOptions)</AdditionalOptions>
diff --git a/SampleApps/webview2_sample_uwp/WinRTAdapter/WinRTAdapter.vcxproj b/SampleApps/webview2_sample_uwp/WinRTAdapter/WinRTAdapter.vcxproj
index 287f5db9..9a6344a0 100644
--- a/SampleApps/webview2_sample_uwp/WinRTAdapter/WinRTAdapter.vcxproj
+++ b/SampleApps/webview2_sample_uwp/WinRTAdapter/WinRTAdapter.vcxproj
@@ -96,6 +96,7 @@
       <AdditionalOptions>%(AdditionalOptions) /bigobj</AdditionalOptions>
       <PreprocessorDefinitions>_WINRT_DLL;WIN32_LEAN_AND_MEAN;WINRT_LEAN_AND_MEAN;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <AdditionalUsingDirectories>$(WindowsSDK_WindowsMetadata);$(AdditionalUsingDirectories)</AdditionalUsingDirectories>
+      <MultiProcessorCompilation>true</MultiProcessorCompilation>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>