Here is the problem: I tried with folowing switches: /qn Reboot=Suppress /qn Reboot=ReallySuppress /quiet /norestart and all other combination both .exe and .msi and no matter what combination i'm using all i've got is restart (shutdown.exe with 5sec. contdown) When i try 1st switch from command prompt on my computer running winXP everything is getting fine using WPI and alc120% 1.9.2 build 1705 retail any idea?