We have recently experienced a power slow down on our PC with Windows 7. We checked the task manager and there was a process running named GWXconfigmanager.exe. This process is signed by Microsoft and if you check the MS site, you will see that it was a part of the update KB3035583.
However, the file that was running on our PC looks very suspicious – it could not be killed and the process priority could not be changed as ell. We used “Autoruns” to see when/where this process started. However, not a sign of how this process starts.