Squizle 0 Posted June 14, 2012 I installed Arma II along with OA via steam. Started the game, then started the Six Updater but when I attempt to choose a server and play it loads the game and then the game goes away and it says "Bad serial number given in Setup"What do I need to do to get Day Z working? Share this post Link to post Share on other sites
lukestephens 0 Posted June 14, 2012 On steam Right click arma 2 OA and go to properties then go to the Local files tab and click verify integrity of game cache Share this post Link to post Share on other sites
Cloakedboltz 0 Posted June 14, 2012 Try to launch Operation Arrowhead once and try again. Share this post Link to post Share on other sites
Monsieur Blanchard 0 Posted June 14, 2012 Don't worry, had the same problem when I first got Arma 2. Did you launch Operation Arrowhead once BEFORE you installed DayZ? Anyway, shut down steam>task manager>end process> steam.exeOnce you have done that then right click on steam.exe and then select 'launch as administrator'. You only need to launch as admin the first time to get it to work. Hope I helped. Share this post Link to post Share on other sites
Squizle 0 Posted June 15, 2012 Tried both your suggestions and it worked. Thanks a bunch friendos! Share this post Link to post Share on other sites
