It would be good if you could let us know how to perform some sort of logging or debugging so we can at least discern what is at fault. It seems that Microsoft will always blame the software running on it, and the 3rd party software will always blame the environment.
Save yourself the hassle, and do not re-install your OS. I did on 2 separate systems, and all it did was waste an entire day.
For me, UE5 launches and works, but only for a few minutes and then crashes with no real information. Irrelevant of how clean an install. Even if I launch it, and just move the mouse and click randomly, it fails after a few minutes.
The ONLY thing I can do is revert back to UE4, which is fine for a pleb user, but if I had plans to maybe finance my Epic Games account due to the licensing legislation, why would I when the software is not working and the support is nowhere to be found.
Is there a support portal of any description or do we just moan on these forums until something happens maybe?