Every time I start up Halo 5, and go to matchmaking, I can find a game of Arena or Warzone no problem. But once my first game is over and I try searching again, I find all the players the game needs and make it to the final loading screen and my search times out and takes me back to the menu before the game begins to count down. This happens EVERY TIME I try searching for a second game in Arena, Warzone, even Custom Games! I have to quit out of Halo 5 and restart the game back up in order to play another match! Does anyone else have this issue or know a possible solution for this?
That sounds incredibly frustrating, OP. Not to sound sarcastic, but have you tried hard resetting your XB1?
I don’t have this problem but try doing a hard reboot.
This is a new Xbox One. I sent my old one for unrelated repairs and it had the same problem. And I’ve already tried reinstalling Halo 5
I always get disconnected from my first game of the day in warzone 
> 2533274834060744;1:
> Every time I start up Halo 5, and go to matchmaking, I can find a game of Arena or Warzone no problem. But once my first game is over and I try searching again, I find all the players the game needs and make it to the final loading screen and my search times out and takes me back to the menu before the game begins to count down. This happens EVERY TIME I try searching for a second game in Arena, Warzone, even Custom Games! I have to quit out of Halo 5 and restart the game back up in order to play another match! Does anyone else have this issue or know a possible solution for this?
I’ll be honest I don’t have that issue, but for me multiplayer has become unplayable. I’m and average player, but I have put in time to get a high level and high reqs, but I get placed with people that are so much better than me and it’s not fun