Hi, when i made this with Build 382 i have no Problem, so i think thats no Problem with my Firewall. explanation: I have two directories on the same computer. One with Build 382, one with Build 590. So I start with the same user on the same machine, but with build 590 the join button is grayed out. Sometimes it is possible, however, but this is very sporadic and I have previously click on other Servers.