I'm getting this issue now every once in awhile, it's super annoying.

I found another forum thread here with a supposed solution, but it's NOT the solution.

I always had done right click 'run as admin' with Windows 7, but I still see this error from time to time. I can put in my credentials and sometimes it keeps asking.

I find it best to have to close the app, then restart it myself.

I'm thinking it might be Symantec Endpoint security once it starts a scan.