diff --git a/Visual Studio Projects/Pre-Build-Event.cmd b/Visual Studio Projects/Pre-Build-Event.cmd
index b794487f..12610149 100644
--- a/Visual Studio Projects/Pre-Build-Event.cmd	
+++ b/Visual Studio Projects/Pre-Build-Event.cmd	
@@ -29,6 +29,7 @@ rem
 rem Everything implicitly requires BUILD to also be set to have 
 rem any meaning, it always gets set.
 set _X_BUILD=BUILD
+set _X_REQUIRED_WINDOWS_BUILD=20191213
 call :FindVCVersion _VC_VER
 
 set _PDB=%~dpn1.pdb
@@ -127,7 +128,7 @@ if not exist ..\..\windows-build goto _notice1
 if not exist ..\..\windows-build/lib goto _notice2
 set _X_WINDOWS_BUILD=
 for /F "usebackq tokens=2" %%i in (`findstr /C:"WINDOWS-BUILD" ..\..\windows-build\Windows-Build_Versions.txt`) do SET _X_WINDOWS_BUILD=%%i
-if "%_X_WINDOWS_BUILD%" LSS "20191209" goto _notice2
+if "%_X_WINDOWS_BUILD%" LSS "%_X_REQUIRED_WINDOWS_BUILD%" goto _notice2
 set _X_LAST_WINDOWS_BUILD=
 if exist Pre-Build-Event.last-windows-build-version.txt for /F "usebackq tokens=2" %%i in (`findstr /C:"WINDOWS-BUILD" Pre-Build-Event.last-windows-build-version.txt`) do SET _X_LAST_WINDOWS_BUILD=%%i
 if "%_X_WINDOWS_BUILD%" EQU "%_X_LAST_WINDOWS_BUILD%" goto _new_or_same_windows_build