Same issue here. A bit more context that I found:
- It stopped working after (without my intervention) “Gaming Services” completed an update. It is now on version 2.5.3.17002.0 according to the MS Store.
- In the Windows event log I can see an error log happening 2-3 times every second:
‘“Gaming Services” service was terminated with the following error: device specified which doesn’t exist.’ [English translation of the original error message on my German system]
- I have not changed anything on my system; most certainly I have not “specified” any device that “does not exist”.
Clearly, Gaming Services has been broken through an update so that it is now stuck in a loop in which it can never start and, since this is a prerequisite for MSFS, that app cannot start anymore either.
Any help would be appreciated from my side, also.