[Xbox] Unable To Join Server Error

Whenever I try to join a gamemode in the multiplayer category, It'll say it found a really great server, load for a bit, then it'll say "Unable to join a session. Please check your network connection and try again.". Garden ops still works, which is strange.

I've tried turning off the internet, unplugging the console from both ends, reinstalling the game, and testing the network connection in the Xbox settings.