Hi all, I want to play TF2 in a LAN party. But there are some problems ! My TF2 is a FULL GCF version. With the lastest update. I don't know why, but i can't create or join LAN server ! I have an error message which says "CD Key authentification invalid for internet servers" ! But i only want to play offline, the game is launched with UCL. Do you have a solution please ? I have a look in the forums but no answers or tool for that ... Thanks you by advance for your help ! JameS.