So I bought the game the day it came out and have played mp and the campaign with no issues until yesterday. I was resuming the campaign and I was booted to the xbox home screen. I have tried everything I can think of, restart and re-download. Has anyone else had this issue or know how to resolve it??
Same problem. I just closed Halo 5 and played the MCC 
it is starting to get infuriating. I have been kicked from more than a dozen games in-progress since last night. DNF’s are racking up. Time spent with no req points from it and amazed I haven’t gotten banned. And not even an official acknowledgment on here that something got messed up with the recent update
I experienced the same thing today too. I was trying to continue where I left off in the campaign, but I kept getting brought to the Xbox home screen when the game was about to load.
Had no probs with multiplayer but I died on SOS legendary campaign and instead of checkpoint I got booted and could never load campaign again.