open 'services'. go to the windows defender service and change it from local account to an administrator account on ur network. try to start the service. if it dznt, u may get a msg "access denied". fine. then change it back to local account. now c if it helps...
...if it dznt try here at "windows defender install errors"
click
http://techrepublic.com.com/5208-111...hreadID=197714