If you are unable to connect, here are some steps you can take to help troubleshoot it: If you get a connection error when entering the multiplayer setup screen, it means you are failing to connect to this server. The Battle Servers are what the game connects to when you host or join a custom or automatch game, and stays connect to for the duration of the game. II.Disable your firewall and/or antivirus software. Whitelist the COH2 executable (RelicCoH2.exe) in your firewall and/or antivirus software If it does work, the most likely issue is that your firewall and/or antivirus software is blocking COH2.If it does not then you need to make sure that TCP port 443 is open.It should bring you to a web page that says:.Open a web browser and follow this link:.

If you get a connection error message when you first enter the main menu, it means you are failing to connect to this server. The game will attempt to connect to the Company of Heroes 2 lobby server on boot, and stay connected for the entirety of your game session.

Error code 3 company of heroes 2