when i join a game in cs it says my cd key can't work on valve
PLZZ help me. My Counterstrike can't join any game in multiplayer mode. When ever i click on a game it always say "your cd key doesn't work on Valve. Can somebody tell me why this happen and how i can fix it??? Plz help me!!!

have you ever handed out the cd key to anyone else, because that sounds like some one is already using that cd key. you want to be careful with those cd keys, people like to take them and register tham. and then your screwed.

Somebody using a KeyGen probably beat you to using the code online. There really isn't anything you can do short of returning the game, getting a new one and hoping the Key on the next game works.

edit: People always appreciate when you spell things correctly and use proper grammar. Welcome to TechSpot!

yep like the previous posters said you are going to need a new key