Games on PASS are not launching

Every new Microsoft first-party title will be added
into Game Pass at launch, starting with Sea of Thieves.

As of May 2019 here is a list of every Game Pass game.

it's not microsoft that decides completely what games are on the game pass at launch, it's the developer that has to decide whether to put a game on game pass or not.

Do you have any outstanding updates for the game.

Also do you own the games or play on games pass - has your games pass expired.

I often have trouble launching Forza but keep trying and eventually it launches

In PC don't launch in Game Pass Ultimate

So it's normal that not a single Xbox game pass game will launch?