These error codes are beyond annoying however you can still connect to 4v4 matches if you are patient enough. I learned this yesterday when queueing up for a 4v4 match and I got matched into a game and played through the entire game. I had been playing only 1v1 duel's so this was a very refreshing game for me and although we lost I had a ton of fun. Then the game disbanded... and I was stuck with error codes. If you have these error codes you need to keep trying to join the game mode as many times as it takes. Sometimes it takes 15 seconds on the first try and sometimes it takes 15 minutes on the 15th try. Usually it takes 3-8 tries but it could take as many as 15 or more. If you want to play with friends make sure that YOU are the group leader so when the error code pops up it doesn't kick you out without the group. If you have trouble inviting friends keep inviting them and eventually they can get in and join your party. This is a temporary work around for people having these problems but they are absurd, especially for a AAA title at full price with in-game purchases. Don't even get me started on the P2P. Also, as a disclaimer, this method does work (for me) however... it will only make you hate Ubisoft more and probably make you want to rip your hair out. It's probably best you play alone so you don't have to invite friends. If you get into a queue "Looking for players (LOL)" for more than a minute then just leave because the lobby is bugged and it will never connect. After you leave it will disband your party if you had one.