Was able to play about 6 or 7 rounds of Arena until a Unable To Join banner began popping up for every playlist: Arena, Slayer, Warzone, even Custom Matches. It goes through the matchmaking sequence and when it hits the last loading bar (Game Loading), a red banner appears and says Unable To Join. I have tried resetting the game, my Xbox, even the router… but still no luck. Please Help!
I’ve been having the exact same issue.