CreepersbeCreepin 2 Posted August 1, 2012 When i ever i try to join a game i get error saying "Bad serial number in setup" message, what do? Share this post Link to post Share on other sites
**renegade** 1 Posted August 1, 2012 you need to run steam as administrator and 'validate integrity of game catch' for both arma 2 and arma 2 op Share this post Link to post Share on other sites
CreepersbeCreepin 2 Posted August 1, 2012 you need to run steam as administrator and 'validate integrity of game catch' for both arma 2 and arma 2 op so should i just run arma 2? i am the administrator Share this post Link to post Share on other sites
joss533 0 Posted August 3, 2012 I had this problem to please help! Share this post Link to post Share on other sites
JAMESWOODS2012 0 Posted August 3, 2012 (edited) listen. I know how to fix this. If your usen arma 2 free with arma operation arrow head you will get the message of invalid Serial number to fix itgo to www.youtube.com/watch?v=HRK1t6tXpbw Edited August 5, 2012 by Legacy Share this post Link to post Share on other sites
