Some games not launching with builds 20257 and 20262

I was playing Valhalla then took a break and installed Windows updates just now. It installed to 20262. I noticed Valhalla no longer works, so I figured I could just rollback like always, but when I clicked the Get Started for the roll back it says: "We're sorry, but you can't go back" "The files we need to take your back to a previous version of Windows were removed from this PC." So I think someone broke the rollback somehow also. Looks like I'm stuck on 20262.

(I was just using this for WSL 2 CUDA stuff for reference, so I'm jumping off insider builds once that makes it into the release).

There are 3 scenarios that lead to this message. 1. It has been more than 10 days since you updated. I think its safe to say this isn’t the issue. 2. You manually deleted the windows.old folder. 3. You ran disk cleanup and removed previous versions of Windows. If you didn’t do either 2 or 3 please file It in Feedback Hub and share the link so we can investigate. 

We are investigating the AC issue and appreciate your patience. 

As for jumping off of Insider builds, please note you are in the Dev Channel and it is constantly moving forward, so to get off and return to a retail build you must perform a clean install. 

-Eddie

I was playing Valhalla then took a break and installed Windows updates just now. It installed to 20262. I noticed Valhalla no longer works, so I figured I could just rollback like always, but when I clicked the Get Started for the roll back it says: "We're sorry, but you can't go back" "The files we need to take your back to a previous version of Windows were removed from this PC." So I think someone broke the rollback somehow also. Looks like I'm stuck on 20262.

(I was just using this for WSL 2 CUDA stuff for reference, so I'm jumping off insider builds once that makes it into the release).

Since build 20257, the Assassin's Creed Origins, Assassin's Creed Odyssey and Assassin's Creed Valhalla games are no longer launched. I was hoping that build 20262 would fix the problem, but it doesn't. So I have to go back to build 20251 for these games to work.

We're investigating this one. Would you mind filing feedback and share the link with me? 

-Eddie