: Sometimes the "DeviceKey" for your Xbox login becomes corrupted. In the Windows Credential Manager, delete entries starting with Xbl|DeviceKey and XblGrts|DeviceKey before restarting the game. Verify Integrity of Game Files :
Modified saves often have mismatched checksum data. If the user updates the game or attempts to sync this data with the official cloud servers, the save file risks corruption, potentially locking the user out of their profile entirely.
, representing a save with massive amounts of playtime and nearly all content unlocked. 2. Modded or 100% Completion Saves