system
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I had an identical problem a couple months ago. It was caused by a dirty mcc.exe process and was not picked up by any AV or anti spyware at the time. Check in task manager to see if you have this process running, but don’t kill or delete it yet because it can be legit. Don’t want advertise for them but if you give me a hint of the sites it’s opening I can confirm if it’s the same problem I had.