Nekudotayim 1 Posted July 13, 2012 (edited) Hello, I was planning to play Arma 2 and OA in COOP with a friend through internet. So I set up a host for the campaign. (also tried it in multiplayer mode) I've set up a password, so only he is able to join me. He was looking for my host, he found it and tried to join but the connection failed. He saw that my host has a ping of 2500. I was searching for a solution but nothing helped so far. Hopefully, you can help us. I am using Win 7 and bought Arma 2 OA using Steam. I also started Arma 2 using Steam. (maybe I should start it without the Steam "Overlay"?) I have an upload speed of ~821,20 kBit/s, which I guess should be enough for a 2 player campaign COOP. I tried the following things: First, I disabled the Windows 7 firewall and also the firewall on my router. No success. Then I tried to configure the firewall. The Win 7 firewall has 3 profiles: private, public and domain. The private profile is active. Arma 2 rules are set up to be active for private and public profiles. Can anyone help me please, what exactly I have to set up here, to allow incoming requests for Arma 2 and the ports? I kinda wonder, if I really need to setup anything here, because it did not work, even if the firewall was disabled. Any help on this is much appreciated! :) A sticky thread for this would be nice too. Best regards Edited July 13, 2012 by Nekudotayim Share this post Link to post Share on other sites
Clowns2 10 Posted July 13, 2012 Check your Task Manager and kill anything that you don't need may help you out. Share this post Link to post Share on other sites
