So how do I get rid of this? I've tried searching and I've deleted those KB##### installed updates but I still have this message and I'm afraid I can't check/download/install updates. I've also tried looking into my registry keys for SOFTWARE> Microsoft> Windows> CurrentVersion> WindowsUpdate> OSUpgrade> AllowOSUpgrade, but I couldn't find it and I'd rather not mess with the registry keys. So far the locked pop-up hasn't been around which is good but this thing is still here and I can't check for updates whatsoever. Any ideas? Edit: I also forgot to mention that I did disk cleanup as well. Didn't really solve the problem. Any other ideas?