matchmaking problem

Everytime i search for halo 2 or 4 multiplayer matches i get kicked out of the game straight away. I have opened ports to my router and also reinstalled the game but still no luck. Halo 3 works fine everytime though. Can anyone help? Thanks

I am getting the same issue too - H2A and H4 - I’ve not found any fixes yet, only seems to be happening to a few people though! My mates can play on it fine