In the game itself: I cannot sign in to Xbox account

OK, thanks, but that suggestion did not work. I used alt enter and went to full screen. Still it won’t accept any text into that box.

I tried using another mouse, I tried using another monitor, did not help.
I ran these 3 things in a cmd box, it did not help.

DISM /Online /Cleanup-Image /CheckHealth
DISM /Online /Cleanup-Image /ScanHealth
Dism /Online /Cleanup-Image /RestoreHealth

I’ve been working trying to get this done for over 2 hours.