Steam Deck/Linux to Windows/Xbox Co-Op Fix for (at least) Halo: Reach and Halo: CE

Signs of the problem:

1. Your solo campaign games run perfectly fine
   
2. You as a Linux User are playing with a windows/xbox user
   
3. You get the error saying: "the co-op has run into an error", or the one player would freeze upon reaching the checkpoint

If all of these are true, then like your parents' divorce, YOU are the problem.











This may not be limited to Reach, or CE so we might have to update the game/crashes as a community.

It is recommended you go to these files on a windows computer with MCC installed and pull these bad boys out:

And toss them on your Linux device in:

You are deleting the old files, so don't be scared to overwrite them.

This works with Anti-Cheat and you shouldn't have any other issues related to this! But I still need help! I don't know if other games are affected by this nor am I sure what other conditions causes this to happen. If this helps anyone please leave it in the comments!