Originally posted by xIFoRSaKeN
Please note that this worked for me and might not work for everyone.
I haven't been able to play online since the day this game came out and this worked.
This is actually pretty simple: go to your router settings on the website thing thats like 192.168.1.1 and change your NAT type to strict.
Worked for me and i hope it works for you aswell
May I ask how you do this? And did this work on your primary account?