I used your guide for silent installation for avira 10, but installation doesn't work. I use your setup.inf and i added one line [DATA] DestinationPath=C:\Program files\AntiVir ProgramGroup=0 DesktopIcon=1 ShellExtension=1 Guard=1 MailScanner=1 KeyFile=key\HBEDV_2008-07-15.KEY ShowReadMe=0 RestartWindows=0 ShowRestartMessage=0 RootKit = 1 ScanMode=0 for the cwnd.exe i use cwnd.exe / hide @ @ ECHO OFF start / wait% windir% \ Temp \ Avira \ basic\setup.exe / inf = "% windir% \ Temp \ Avira \ setup.inf" taskkill / IM avscan.exe / F / T i maked.exe file with your guide but when i start antivirprec.exe i receive error I changed extension of cwnd.exe to cwnd.cmd and i don't receive error but nothing happens. the commands in script is listing but nothing. What i do? What I do? thank's