This problem appeared with new season. I just found lobby in "Dominion", but game just sent me on world map, give me message that I left the lobby (without error message), and 15 min penalty. Same thing in ALL GAME MODES: duels, brawls, breach, I cant create even A CUSTOM GAME, because I just cant to join lobby. Yes, even with only bots and without other players.My internet connection is not bad, before update there wasn't problems like this.
Please help me, I literally can't play at this game because os that.
First time I ever see something like this. If I had to take a guess, it'd be the Easy Anti-Cheat software detecting something from the client's side and not letting you connect. That, or maybe the update download was corrupted.
Run a Verify game cache on For Honor from Steam to see if everything's right with the game files. I'd also advise turning that yellow NAT to green by forwarding Uplay and For Honor's ports. If those don't work, a clean reinstall would be your final option before submitting a ticket to Ubisoft Support.