diff --git a/cryptdll.vcxproj b/cryptdll.vcxproj
index 31e049b4..cc4cd058 100644
--- a/cryptdll.vcxproj
+++ b/cryptdll.vcxproj
@@ -49,6 +49,7 @@
       <SuppressStartupBanner>true</SuppressStartupBanner>
       <ErrorReporting>None</ErrorReporting>
       <WarningLevel>Level4</WarningLevel>
+      <DisableSpecificWarnings>4231; 4355; 4505</DisableSpecificWarnings>
       <PrecompiledHeader>Use</PrecompiledHeader>
       <PrecompiledHeaderFile>pch.h</PrecompiledHeaderFile>
     </ClCompile>
diff --git a/cryptest.vcxproj b/cryptest.vcxproj
index 8916b34c..4ff99b48 100644
--- a/cryptest.vcxproj
+++ b/cryptest.vcxproj
@@ -79,6 +79,7 @@
       <SuppressStartupBanner>true</SuppressStartupBanner>
       <ErrorReporting>None</ErrorReporting>
       <WarningLevel>Level4</WarningLevel>
+      <DisableSpecificWarnings>4231; 4355; 4505</DisableSpecificWarnings>
       <PrecompiledHeader />
       <PrecompiledHeadeFile />
     </ClCompile>
diff --git a/cryptlib.vcxproj b/cryptlib.vcxproj
index 49cdb76f..25a36079 100644
--- a/cryptlib.vcxproj
+++ b/cryptlib.vcxproj
@@ -79,6 +79,7 @@
       <SuppressStartupBanner>true</SuppressStartupBanner>
       <ErrorReporting>None</ErrorReporting>
       <WarningLevel>Level4</WarningLevel>
+      <DisableSpecificWarnings>4231; 4355; 4505</DisableSpecificWarnings>
       <PrecompiledHeader>Use</PrecompiledHeader>
       <PrecompiledHeaderFile>pch.h</PrecompiledHeaderFile>
     </ClCompile>
diff --git a/dlltest.vcxproj b/dlltest.vcxproj
index 083f804d..c1b61b24 100644
--- a/dlltest.vcxproj
+++ b/dlltest.vcxproj
@@ -47,6 +47,7 @@
       <SuppressStartupBanner>true</SuppressStartupBanner>
       <ErrorReporting>None</ErrorReporting>
       <WarningLevel>Level4</WarningLevel>
+      <DisableSpecificWarnings>4231; 4355; 4505</DisableSpecificWarnings>
       <CallingConvention>StdCall</CallingConvention>
       <PrecompiledHeader />
     </ClCompile>