[NAME]  How did you reinstall windows : If you did a RESET or Factory image restore it will just put stock image back to the computer.  Instead F12 > Supportassist OS Recovery > RESET > RESET and Update This will reinstall OS by downloading a fresh image of windows 10 from Dell servers. 
I migrated over from my old PC. Now I can't run Microsoft Store or Feedback Hub. Google yielded various things to try, but nothing seems to do the trick. I did allow it to re-install Win10, but that didn't help either. Would upgrade to Win11 help? Any suggestions?
XPS 8940, Windows 10, can't run Microsoft Store or Feedback Hub