So I’m in the middle of searching a game and I find one but then 5 sec later it kicks me to the main menu in halo 5 and says “left fire team” or "fire team has been change " then lol it gets better! It banned me like I didn’t leave a game or anything it’s not my connection . Is anyone else dealing with this if so it sucks because I’m tired of getting banned and banned and BANNED for nothing
Did someone add you to their fireteam or did you invite them? did you maybe hit B while a match was starting?
Yeh I always get disconnected and get banned 
probly just some glitches. Could be your internet too