This is what worked for me, and I cannot guarantee it will work for you. Refresh versions, verify they are the latest Once loaded, download DayZ (latest version) from within the program, install.ĭownload ARMA 2 CO beta patch (latest version) from within the program, install.Ĭhange file paths in DayZ Commander. Run ArmA 2 CO (arma2OA.exe” -mod=EXPANSION ca).Not sure if this is needed, but run something simple like the Armory to load assets. Remove the backslash, press OK.ĭ) Double-click on MAIN. Go to regedit  (for 64-bit, or skip this step):Ī) Navigate to folder: HKEY_LOCAL_MACHINE > SOFTWARE > Wow6432Node > Bohemia Interactive Studio > ArmA 2ī) Double-click on MAIN. Run Arma2Serial.exe (GOG version) and put in your serial from the Game Account page.I’ll be covering the GOG.com version of the game, but it will apply to the other Non-Steam Versions of ArmA II to help get DayZ installed. You could also use ArmA 2 Free + Operation Arrowhead to play DayZ, but it isn’t recommended (via DayZ Wiki) To be clear, DayZ mod requires ArmA II: Combined Operations which contains ArmA II and the expansion pack, ArmA II: Operation Arrowhead.

This guide should help those who bought through Retail, Bohemia Interactive’s store, or GOG.com (the version this guide is based on). By Scott Ellison II ( you bought a non-Steam version of ArmA II? Installing the alpha version of DayZ is no easy task, as it is an alpha.