Vista - Age of Empires 3 online, "failed to join" message

Well, here it goes:
When im online on Age of Empires 3, actually called Ensamble Studios Online(ESO), don't matter which game i pick from the list of the games i can join, but when i join, a box shows up where it says "connecting", and instead of taking me to the game, a new box saying "failed to join game" appears. The strange thing about this, is that i my self can host a game, and others join it, although i cannot join any other game. My firewall(Norman antivirus) allows the game, and even when i turn the firewall off, and then restart the game, same error appears, so the problem cannot be the firewall... any help would be happily accepted!!

-capi