diff --git a/bin/installOnWindows.bat b/bin/installOnWindows.bat
index 7cd4a26d8..5b04919bd 100644
--- a/bin/installOnWindows.bat
+++ b/bin/installOnWindows.bat
@@ -10,13 +10,15 @@ echo _
 echo Ensure that all dependencies are up to date...  If this is the first time you have run Etherpad please be patient.
 
 
-:: Install admin ui
+:: Install admin ui only if available
+IF EXIST admin (
+ cd /D .\admin
+ dir
+ cmd /C pnpm i || exit /B 1
+ cmd /C pnpm run build || exit /B 1
+ cd /D ..
+)
 
-cd /D .\admin
-dir
-cmd /C pnpm i || exit /B 1
-cmd /C pnpm run build || exit /B 1
-cd /D ..
 
 cmd /C pnpm i || exit /B 1