Anti-Tamper error FM 26

Hi!

Since yesterday's Game Pass update, the game keeps freezing on the loading screen. I keep getting this message, and it seems to be related to Denuvo, since the link takes me to a support page asking me to send a message with the subject "Anti-Tamper: 88500000". I've tried everything to solve this, but the error persists. I saw some people saying that waiting 24 hours would solve the problem, but I waited longer than that and nothing changed. Honestly, I don't know what else to do.

i also have the same issue since yesterday, nothing i do seems to solve it

After contacting Denuvo support, I received a response that resolved the error. The problem is related to Microsoft Gaming Services, and to solve it, I simply uninstalled and reinstalled Gaming Services. After that, the game started working normally again. It seems that a bug is causing Gaming Services not to relay the information that the user actually owns the game.
To uninstall and reinstall Gaming Services I opened PowerShell as administrator and ran these commands:

uninstall - get-appxpackage Microsoft.GamingServices | remove-AppxPackage -allusers

reinstall - start ms-windows-store://pdp/?productid=9MWPM2CQNLHN

I can't believe something so simple solved this.

@GabrielsCAP: Thanks for sharing the workaround you've come across. Hopefully that will help others facing the same issue.