diff --git a/w32/common/common-build-settings.vcxproj b/w32/common/common-build-settings.vcxproj
index a4393a0e..bbf3205e 100644
--- a/w32/common/common-build-settings.vcxproj
+++ b/w32/common/common-build-settings.vcxproj
@@ -26,9 +26,11 @@
   <ItemDefinitionGroup>
     <ClCompile>
       <PrecompiledHeader>NotUsing</PrecompiledHeader>
-      <WarningLevel>Level3</WarningLevel>
+      <WarningLevel Condition="'%(ClCompile.ExternalWarningLevel)' != ''">EnableAllWarnings</WarningLevel>
+      <WarningLevel Condition="'%(ClCompile.ExternalWarningLevel)' == ''">Level4</WarningLevel>
+      <ExternalWarningLevel>Level3</ExternalWarningLevel>
       <PreprocessorDefinitions>WIN32;_CRT_SECURE_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <DisableSpecificWarnings>4996</DisableSpecificWarnings>
+      <DisableSpecificWarnings>4996;4820;4127;5045</DisableSpecificWarnings>
       <TreatSpecificWarningsAsErrors>4013</TreatSpecificWarningsAsErrors>
       <ProgramDataBaseFileName>$(IntDir)$(TargetName).pdb</ProgramDataBaseFileName>
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>