I just downloaded the BTB update but unfortunately I keep getting a message saying “Attention There was a problem with the Xbox Live Party Service. Please try again”, can’t start Arena or Warzone 
It’s broken for me too.
In campaign, when i dead and come back on a check point, my game quit…why ?
you are not missing much.
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> you are not missing much.
Will pass judgement for myself
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> In campaign, when i dead and come back on a check point, my game quit…why ?
It happens to me as well. Then i try to start campang again, it quits and send me to the dashboard.
Have you tried a hard reset on your xbox? Good luck. I know I’d be sadface too if I kept hitting an error like that.
Tried a hard reset. But still same… I tried resetting my router, all other Xbox Live services are working. I’m connected and can connect to parties and other games load up fine but can’t join any Halo games. Strangely my missus on the same Network is in the next room playing Halo 5 on the BTB Playlist. So I have decided to reinstall Halo from scratch just incase my update didn’t install properly.
Update: It seems all my Xbox One games have been affected, so it is probably not related to the Halo Update unless it’s clashed with the new Xbox Experience somehow. I tired MGSV: Phantom Pain and its says my save data cannot be found? I tried Gears of War Re-Mastered and get the same message but Gears of War 3 on the 360 loads fine and still has my saves in place. Everything was fine until the Halo update. So frustrating
I got to play three big team games before i was booted and got the same message as you… Tried resetting everything as well.
I can’t even open halo 5 says requires update then says there is a problem with the update no error code or anything
Have you tried turning it on or off? LOLOL Uhmm I would say sign out/in of your microsoft account. I sorta had the same issue after installing the update, but I just signed out and in.
Ya tried all that same result