"CD Key authentication invalid for internet servers." happens when i start empires via shortcut without steam running in the background - normaly steam just starts up if needed! what does that mean and how to prevent this? (wasn't empires independed befor shipping over to steam?!)
Steam is required to run empires and you have to start the game with the -steam parameter. We don't support running the empires client without a steam account. If you need to run a server, please use the dedicated server package in the tools tab or create a new steam account.