Sync Data 0% PC

I’ve already submitted a support ticket for this, but re-writing here incase anyone has a solution.

I was playing on main PC and the game asked for sync out of nowhere, stuck on 0% so i closed it and re-opened the game, nothing, stuck at loading.
Worried that my save was deleted so I installed the game on my laptop and everything was fine, sync completed 0 to 100% in something like a second,
all of my stuff was retained and I can still play on my laptop to this day, i’ve reset and re-done all I can on my main PC but it still sticks on this 0% sync
operation ultimately. Why won’t it just download the save like my laptop did?

Stuff I’ve tried (with reboots all inbetween and at necessary points):

  • deleting xbox apps/windows store and reinstalling
  • reinstalling the game
  • resetting the game
  • transferring save files from my laptop to my PC (in an attempt to make it skip the sync operation with the most up-to-date save from laptop)
  • starting game in offline, playing until game saves, reconnecting to the internet and restarting, 0% sync. Didn’t even replace my existing cloud save.
  • actually letting it sync after reset for about 1.5hrs, nothing. (200/20 internet)

It seems this issue spans across multiple systems, across multiple games. Don’t understand why MSFT doesn’t patch this.
Has anyone else got a solution or do I have to reinstall windows?