Bitemyneck 10 Posted July 28, 2011 I just bought Operation Arrowhead from steam and when I hit play the game launches like normal arma 2, After a few seconds of seeing the Bohemia Logo, the game closes and I get an error box saying "Bad serial Number given in setup" and the game closes. Steam never sent me a serial number And i have no way of resolving this, please anyone help if you can. Share this post Link to post Share on other sites
vohk 10 Posted July 29, 2011 1. You need to become acquainted with the search function. 2. Close Steam. Launch Steam 'as administrator', then launch the game normally. 3. If that still fails, reboot and try the above again. By the way, you can view serial keys for games purchased through Steam by right clicking the game in the library and then 'View game CD key', although that won't help here. Share this post Link to post Share on other sites