Write the following commands inside the file Your Subversion repository /hooks/pre-commit.cmd SET REPOS=%1 SET TXN=%2 "C:\Program Files (x86)\VisualSVN Server\bin\svnlook.exe" log %REPOS% -t %TXN% | findstr . > nul IF %ERRORLEVEL% EQU 1 GOTO ERR exit 0 :ERR echo. 1>&2 echo no commentsr: 1>&2 echo please add comment before commit. 1>&2 echo Commit details: 1>&2 EXIT 1