I'm facing this connection issue "connection failed there was an error with this connection" which appears right after I choose a server .. I searched for this error on the forums and found some answers about direct X, proxy and firewall.. I tried them all but in vain , this problem happened 2 days ago , but yesterday I successfully connected and played, but now it's happening again and I can't fix it !!

Please can anyone help me?
I desperately need to play , and sorry for my bad english