Why Halo didnt start on my xbox

So, got series x, installed Halo Infinite. Didnt work. The game started and got into manu - everything worked - but the start game button was grey. And I got a message that this content was not innstalled.
I contacted Halo support - sendt a ticker. Got autoreply (i guess, tokk 3 seconds) thet this was an installationerror and was xbox support not halo. So contacted xbox support - who answerd this is not a problem we know of, so its not a problem…
The other day I instaaled an other game, and the game was in german… Im norwegian, my german is a bit week. So I changed console language from norwegian to english. And game turned english. Great. Then I thought, hmm maby try halo now… So started halo, got updatenotice … downloaded. Started game - everything worked!
So the bug that dont exist ist that it wont start with every language out there - yet - so if you have this problem, change xbox to english…