Dayz Bad Serial number, please HELP!!!

[staticza 0]

When i open Arma or Dayz I get a Error message saying Bad Serial Number given at setup, Can anyone please explain this problem and how to solve it.

 

Many thanks to those who do.

[Testwd3r235 2810]

Where did you get Arma II?

[staticza 0]

Off of STEAM

[staticza 0]

Brought it during this years summer saleXD

[Skat3rat 1633]

Try running steam as administrator and then running Arma 2?

[TheDesigner 1197]

I suggest Googling this or searching the forums. I've seen this problem fixed before. The answer is there if you're willing to search for it.

Edited September 5, 2013 by TheDesigner

[staticza 0]

Ive tried running it as an ADMIN still gives me the same error

[TheDesigner 1197]

Ive tried running it as an ADMIN still gives me the same error

http://dayzmod.com/forum/index.php?/topic/97180-the-complete-thread-about-serialcd-key-problems/

[Death_Dealer 3156]

Have you messed with the registry, specifically for Arma 2, at all?