I have checked the windows update agent and it is fine; i have checked the remote registory service on targeted computer and found that it is not available in the windows services. Please advice.

Hi Yasir Abid,Please try the MBSA Newsgroup instead. MBSA NewsgroupsServer: news.microsoft.comGroup: microsoft.public.security.baseline_analyzerHope this helps, Vincenzo Di Russo - Microsoft MVP Windows Internet Explorer, Windows Desktop Experience & Security - Since 2003. ~~~ My MVP Profile: https://mvp.support.microsoft.com/profile/Vincenzo

The MBSA newsgroup link is dead... Please advise, Im getting the "Windows Update Agent is not supported on this operating system" error also.

In my enviroment I fixed this issue by turning on the remote registry in windows 7. MBSA scanned just fine on my test group after starting the service. Might be a good idea to turn it off after you get done scanning. You can control services with the "sc" command in a script or use group policy to set its start state (auto,manual,disabled). I havent dug deep enough to see if you can start the service with gpo.