Why can't I launch games from the Xbox app?

Hi there! I am sorry to hear about what happened. Let's do our best to get this sorted out.

Are you using a Windows 10 or Windows 11 machine?
And to confirm, did you install a Windows updates then after it the issue persisted?

For the basic troubleshooting steps, try to reset/repair your Microsoft Store and the Xbox app.
Repair/Reset apps - https://support.microsoft.com/windows/repair-ap...

May I have the exact error code or error message?

Have you also tried to verify and repair your game files?
Open the Xbox app for Windows.
In My Library, select the game title.
Select the More options (…) button and choose Manage.
Select Files and then Verify and repair.

You could also try to reinstall one game. It's possible that your games' files were corrupted and reinstalling it may fix the issue.

Don't forget to run the system file checker as well:
https://support.microsoft.com/windows/using-sys...

I am using a Windows 11 machine and I did install a Windows update then after it the issue persisted.

I ran it from the start menu as an administrator and it launched. I don't know why it doesn't launch from the xbox beta app though.

Happening to me too.

Can't launch any Game Pass game.

XBox app on PC is behaving poorly (no list of installed games, searching for games not working)

Store app claims I need to join Game Pass, but Microsoft Support says I still have 6 weeks of Game Pass Ultimate.

Previously, the game I want to play (Slay the Spire) would only launch from XBox(Beta) app.

But now the XBox app is broken, I can't search for the game. It appears to serve no other purpose at the moment then displaying the games that are available on game pass.