I have an old PC that has not been used in some time. I was checking it out for someone. I cleaned it up and was letting it update. All updates are done with the exception of that nightmare (Malicious Software Removal Tool). I know it comes once a month and runs once in the background. I was even told it deletes itself after it runs. Here is my issue: It will download and install just fine, but it comes right back if I run a check for updates immediately after install or reboot the PC. I was wondering what anyone might know about this curse.