A bunch of random games have appeared in my Installed Games list on the Xbox Game Pass app,...

Hi there!

Please simply try to sign out your account and sign back in if that fixes the issue. If not, try to repair and reset your Xbox app.
Repair/Reset apps - https://support.microsoft.com/windows/repair-ap...

If possible, try to reinstall it.

Hi, thanks for the response.

Where did you mean to uninstall it? I've tried the following:

• In the Xbox Game Pass for PC app, I've right-clicked on the game where it appears on the left hand side, and selected 'Uninstall Game'. This doesn't do anything - the game remains in the list on the left hand side, and if I click 'Install', I get the same
  issue.
• I've tried going into Settings -> Apps and Features, to try and find the game in there to uninstall. The game does not appear in the list of installed apps, so I can't uninstall it here.
• I've tried searching on the hard drive for any files with the game's name. Nothing here to delete.
• I've uninstalled and re-installed the Xbox Game Pass for PC app. Same problem persists.

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.

Hey! My xbox gold is active and I will have to renew it on the 29th of November 2019. It also shows on the xbox games & apps as 2 on my membership list. That being xbox gold and game pass. In terms of license and transaction, it doesn't seem to appear
on both of these. It only appears on my xbox one x game list itself. Hope that helps!

To install the game, I would have to buy it. I don't want to buy a game to install and then uninstall. Even if I did that, I don't think it would appear playable in XBox App because it's no longer a Game Pass title.

What, I believe, I'm seeing is the remnants (registry?) of an installed Game Pass game that I uninstalled and isn't on Game Pass any longer.