I have been banned from playing Halo 4 Matchmaking for no reason. How do I fix this? I was playing KOTH and accidentally stuck a teammate a few times while throwing grenades. Now it says I'm banned. How long does it last, and how do I appeal the ban? 2 comments. share. save hide report. 60% Upvoted. This thread is archived. New comments cannot be posted and votes cannot be cast. Sort by. best.