After using fixit to uninstall MSE It appeared MSE was gone but I keept getting error 0x 80070002. Kept searching using other phrases. Finally searched microsoft client error 0x80070002 got another fixit followed instrucrions worked like a charm. I have Windows xp. No more error 0x80070002 after rebooting.. Below is the fixit I found. Click on the link on this web page that says install and uninstall works great on xp. Since MSE want be suppored for xp someone else might need this. Hope it will help someone. http://answers.microsoft.com/en-us/protect/wiki/mse-protect_start/uninstalling-microsoft-security-essentials/316493c2-8885-46b0-afba-28ebd45c0838 Juanita