Hey Guys, I don't know if this may help, but all yesterday when I installed the game I had this problem, I could not join a single server but later that night and today I fiddled and now it works perfectly. Read on below, I am running the steam version of Arma 2 under Windows 7 64bit also. 1. Find and set the following exe's to run as administrator (Vista/7) Your Steam Folder/Steamapps/Common/Arma 2/Arma2.exe Your Steam Folder/Steamapps/Common/Arma 2 Operation Arrow Head/ArmA2OA.exe Your Steam Folder/Steamapps/Common/Arma 2 Operation Arrow Head/Expansion/Beta/Arma2OA.exe (DAYZ USES THE BETA EXE) 2. Make sure you have the latest Battleye client, get it at "http://www.battleye..../download.html" It needs to be in the original ArmA2 Folder called 'Battleye' and another copy in the 'Battleye' Folder under Expansion (Where you found the Beta Folder) 3. Set the Steam.exe (under the steam folder) to run as administrator as well. 4. Restart or Run Steam as Admin and keep it running while your using DAYZ (I am running Play withSIX, I also run Play withSIX as admin). There is no guarantee that this will work for you, but it appears to have worked for me. Yours Sincerely Tureri P.S If you are not sure of how to set pernament admin privledges on each exe here is how. You need to find the appropriate exe, right click on it, select propeties (down the bottom of the selection that appears). In propeties go to the combatibility tab (Top lines of the popup box) and check the box under Privilege level. Then press apply or okay.