The game works great in SP. The problem are that when I try to connect to any server I get "Connection Failed" Have reinstalled the game more then four times with no changes. Haven't added any custom addons or maps.
I'm using a router and tried to open the three UDP ports and also activated DMZ. But don't think it is a router problem since I can play online on my laptop that runs XP Home.
Have deactivated the Windows firewall and not running any software firewalls. Even tried to deactivate my anti virus program.
So my guess are that the problem involves the OS I'm running and that is Windows Vista 64bit. Have tried the compatibility mode and tested with XP SP2.
CPU: Intel Core2Duo E6600
RAM: 2Gb
GFX: Nvidia 8800GT (100.65)
Soundcard: Soundblaster X-Fi XtremeMusic
Motherboard: P5N32-SLI Premium/WiFi-AP (Nvidia driver 15.00)
OS: Windows Vista 64bit (Swedish version)
DirectX version: Whichever came with Vista
Using router: Yes (Linksys WRT300N)