Y U NO TRY GOOGLE?
Some Random Guy Wrote:Such error appears when your machine has some problem while connecting with the game server.
They give you that error code for a reason. ;)
Also, all the port needed open are;
Both UDP and TCP: 53, 80, 443, 3074...
If they are open, check your firewall(s) and any, and all anti-
crap-you-get-from-the-internet programs to make sure you're allowing it through.