diff --git a/src/char/char-server.vcxproj b/src/char/char-server.vcxproj
index 711a4d4d55..f01f4b9cc8 100644
--- a/src/char/char-server.vcxproj
+++ b/src/char/char-server.vcxproj
@@ -110,6 +110,7 @@
       <PreprocessorDefinitions>$(DefineConstants);WIN32;FD_SETSIZE=4096;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_DEPRECATE;_WINSOCK_DEPRECATED_NO_WARNINGS;LIBCONFIG_STATIC;YY_USE_CONST;_DEBUG;_CONSOLE;_LIB;_ITERATOR_DEBUG_LEVEL=0;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
       <AdditionalIncludeDirectories>$(SolutionDir)3rdparty\rapidyaml\src;$(SolutionDir)3rdparty\rapidyaml\ext\c4core\src;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <ConformanceMode>true</ConformanceMode>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
@@ -229,4 +230,4 @@
     <Copy SourceFiles="$(SolutionDir)tools\charserv.bat" DestinationFolder="$(SolutionDir)" ContinueOnError="true" Condition="!Exists('$(SolutionDir)charserv.bat')" />
     <Copy SourceFiles="$(SolutionDir)tools\runserver.bat" DestinationFolder="$(SolutionDir)" ContinueOnError="true" Condition="!Exists('$(SolutionDir)runserver.bat')" />
   </Target>
-</Project>
\ No newline at end of file
+</Project>
diff --git a/src/common/common-minicore.vcxproj b/src/common/common-minicore.vcxproj
index ef84d424e6..14979e11ba 100644
--- a/src/common/common-minicore.vcxproj
+++ b/src/common/common-minicore.vcxproj
@@ -128,6 +128,7 @@
       <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
       <AdditionalIncludeDirectories>$(SolutionDir)3rdparty\zlib\include\;$(SolutionDir)3rdparty\mysql\include\;$(SolutionDir)3rdparty\libconfig\;$(SolutionDir)3rdparty\yaml-cpp\include\</AdditionalIncludeDirectories>
       <AdditionalIncludeDirectories>$(SolutionDir)3rdparty\zlib\include\;$(SolutionDir)3rdparty\libconfig\</AdditionalIncludeDirectories>
+      <ConformanceMode>true</ConformanceMode>
     </ClCompile>
     <Link>
       <SubSystem>Windows</SubSystem>
diff --git a/src/common/common.vcxproj b/src/common/common.vcxproj
index 182c7c2efd..5d39a0e204 100644
--- a/src/common/common.vcxproj
+++ b/src/common/common.vcxproj
@@ -160,6 +160,7 @@
       <PreprocessorDefinitions>$(DefineConstants);WIN32;FD_SETSIZE=4096;PCRE_SUPPORT;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_DEPRECATE;_WINSOCK_DEPRECATED_NO_WARNINGS;LIBCONFIG_STATIC;YY_USE_CONST;_DEBUG;_LIB;_ITERATOR_DEBUG_LEVEL=0;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
       <AdditionalIncludeDirectories>$(SolutionDir)\3rdparty\rapidyaml\src;$(SolutionDir)\3rdparty\rapidyaml\ext\c4core\src;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <ConformanceMode>true</ConformanceMode>
     </ClCompile>
     <Link>
       <SubSystem>Windows</SubSystem>
@@ -235,4 +236,4 @@
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
   </ImportGroup>
-</Project>
\ No newline at end of file
+</Project>
diff --git a/src/login/login-server.vcxproj b/src/login/login-server.vcxproj
index e1c2b8da09..1c726a04b9 100644
--- a/src/login/login-server.vcxproj
+++ b/src/login/login-server.vcxproj
@@ -109,6 +109,7 @@
       <Optimization>Disabled</Optimization>
       <PreprocessorDefinitions>FD_SETSIZE=4096;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_DEPRECATE;_WINSOCK_DEPRECATED_NO_WARNINGS;LIBCONFIG_STATIC;YY_USE_CONST;WIN32;_DEBUG;_CONSOLE;_LIB;_ITERATOR_DEBUG_LEVEL=0;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
+      <ConformanceMode>true</ConformanceMode>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
diff --git a/src/map/map-server-generator.vcxproj b/src/map/map-server-generator.vcxproj
index 5dd42fd2bf..fb297af80b 100644
--- a/src/map/map-server-generator.vcxproj
+++ b/src/map/map-server-generator.vcxproj
@@ -112,6 +112,7 @@
       <MultiProcessorCompilation>true</MultiProcessorCompilation>
       <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
       <AdditionalIncludeDirectories>$(SolutionDir)\3rdparty\rapidyaml\src;$(SolutionDir)\3rdparty\rapidyaml\ext\c4core\src;$(SolutionDir)\3rdparty\json\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <ConformanceMode>true</ConformanceMode>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
@@ -370,4 +371,4 @@
     <MakeDir Directories="$(SolutionDir)generated\clientside\data\luafiles514\lua files\navigation\" ContinueOnError="true" Condition="!Exists('$(SolutionDir)generated\clientside\data\luafiles514\lua files\navigation\')" />
     <MakeDir Directories="$(SolutionDir)generated\clientside\data\contentdata\" ContinueOnError="true" Condition="!Exists('$(SolutionDir)generated\clientside\data\contentdata\')" />
   </Target>
-</Project>
\ No newline at end of file
+</Project>
diff --git a/src/map/map-server.vcxproj b/src/map/map-server.vcxproj
index 943bc5d2f2..8896928162 100644
--- a/src/map/map-server.vcxproj
+++ b/src/map/map-server.vcxproj
@@ -112,6 +112,7 @@
       <MultiProcessorCompilation>true</MultiProcessorCompilation>
       <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
       <AdditionalIncludeDirectories>$(SolutionDir)\3rdparty\rapidyaml\src;$(SolutionDir)\3rdparty\rapidyaml\ext\c4core\src;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <ConformanceMode>true</ConformanceMode>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
@@ -375,4 +376,4 @@
     <Copy SourceFiles="$(SolutionDir)db\import-tmpl\status.yml" DestinationFolder="$(SolutionDir)db\import\" ContinueOnError="true" Condition="!Exists('$(SolutionDir)db\import\status.yml')" />
     <Copy SourceFiles="$(SolutionDir)db\import-tmpl\stylist.yml" DestinationFolder="$(SolutionDir)db\import\" ContinueOnError="true" Condition="!Exists('$(SolutionDir)db\import\stylist.yml')" />
   </Target>
-</Project>
\ No newline at end of file
+</Project>
diff --git a/src/tool/csv2yaml.vcxproj b/src/tool/csv2yaml.vcxproj
index b71dcc5526..48d135aa31 100644
--- a/src/tool/csv2yaml.vcxproj
+++ b/src/tool/csv2yaml.vcxproj
@@ -114,6 +114,7 @@
       <PreprocessorDefinitions>$(DefineConstants);WIN32;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_DEPRECATE;_WINSOCK_DEPRECATED_NO_WARNINGS;LIBCONFIG_STATIC;YY_USE_CONST;MINICORE;_DEBUG;_CONSOLE;_LIB;_ITERATOR_DEBUG_LEVEL=0;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
       <AdditionalIncludeDirectories>$(SolutionDir)3rdparty\yaml-cpp\include\;$(SolutionDir)3rdparty\rapidyaml\src;$(SolutionDir)3rdparty\rapidyaml\ext\c4core\src</AdditionalIncludeDirectories>
+      <ConformanceMode>true</ConformanceMode>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
diff --git a/src/tool/mapcache.vcxproj b/src/tool/mapcache.vcxproj
index f9c964159a..75bd6be2fa 100644
--- a/src/tool/mapcache.vcxproj
+++ b/src/tool/mapcache.vcxproj
@@ -94,6 +94,7 @@
       <Optimization>Disabled</Optimization>
       <PreprocessorDefinitions>$(DefineConstants);WIN32;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_DEPRECATE;_WINSOCK_DEPRECATED_NO_WARNINGS;LIBCONFIG_STATIC;YY_USE_CONST;MINICORE;_DEBUG;_CONSOLE;_LIB;_ITERATOR_DEBUG_LEVEL=0;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
+      <ConformanceMode>true</ConformanceMode>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
diff --git a/src/tool/yaml2sql.vcxproj b/src/tool/yaml2sql.vcxproj
index c8362bab54..14a90617dc 100644
--- a/src/tool/yaml2sql.vcxproj
+++ b/src/tool/yaml2sql.vcxproj
@@ -95,6 +95,7 @@
       <PreprocessorDefinitions>$(DefineConstants);WIN32;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_DEPRECATE;_WINSOCK_DEPRECATED_NO_WARNINGS;LIBCONFIG_STATIC;YY_USE_CONST;MINICORE;_DEBUG;_CONSOLE;_LIB;_ITERATOR_DEBUG_LEVEL=0;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
       <AdditionalIncludeDirectories>$(SolutionDir)3rdparty\yaml-cpp\include\;$(SolutionDir)3rdparty\rapidyaml\src;$(SolutionDir)3rdparty\rapidyaml\ext\c4core\src</AdditionalIncludeDirectories>
+      <ConformanceMode>true</ConformanceMode>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
diff --git a/src/tool/yamlupgrade.vcxproj b/src/tool/yamlupgrade.vcxproj
index bb87f2c84e..6e9912ed92 100644
--- a/src/tool/yamlupgrade.vcxproj
+++ b/src/tool/yamlupgrade.vcxproj
@@ -95,6 +95,7 @@
       <PreprocessorDefinitions>$(DefineConstants);WIN32;_CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_DEPRECATE;_WINSOCK_DEPRECATED_NO_WARNINGS;LIBCONFIG_STATIC;YY_USE_CONST;MINICORE;_DEBUG;_CONSOLE;_LIB;_ITERATOR_DEBUG_LEVEL=0;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
       <AdditionalIncludeDirectories>$(SolutionDir)3rdparty\yaml-cpp\include\;$(SolutionDir)3rdparty\rapidyaml\src;$(SolutionDir)3rdparty\rapidyaml\ext\c4core\src</AdditionalIncludeDirectories>
+      <ConformanceMode>true</ConformanceMode>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>
diff --git a/src/web/web-server.vcxproj b/src/web/web-server.vcxproj
index e778b7c7ad..d61341a5a3 100644
--- a/src/web/web-server.vcxproj
+++ b/src/web/web-server.vcxproj
@@ -97,6 +97,7 @@
       <AdditionalIncludeDirectories>$(SolutionDir)3rdparty\httplib\;$(SolutionDir)\3rdparty\rapidyaml\src;$(SolutionDir)\3rdparty\rapidyaml\ext\c4core\src;$(SolutionDir)\3rdparty\json\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <DisableSpecificWarnings>4018;4200</DisableSpecificWarnings>
       <MultiProcessorCompilation>true</MultiProcessorCompilation>
+      <ConformanceMode>true</ConformanceMode>
     </ClCompile>
     <Link>
       <SubSystem>Console</SubSystem>