GAME DOESN'T WORK SAYS OFFLINE

Haven’t been able to play this game for WEEKS after playing it for a couple weeks. Paid 40$ and can’t even play it because it says it is offline.

Can’t even play the campaign without it saying “halo is not installed” then i go into to install it and try that again “something went wrong on our end waiting a bit might help”.
After weeks i just gave up. I want the game to work but doesn’t seem like other people have this problem.

“contacting server to get the latest matchmaking data” all the time.
Why am i not online if i’m signed into xbox? makes NO SENSE.

I’m dealing with something similar. I saw a solution that said to log out of xbox live and log back in. Well, I logged out of Xbox live and now the game refuses to connect to xbox live to allow me to attempt to login again. I was able to at least play campaign and now I can’t even do that. I’m on steam.