Closed INVALID CD KEY MEAN Tags: PC gaming Multiplayer CD-Rom Computers Video Games Last response: February 13, 2010 10:03 AM in Video Games Share Anonymous February 13, 2010 4:55:20 AM What does an invalid CD key on Halo multiplayer on my computer. More about : invalid key Best solution kristjanmn February 13, 2010 8:46:05 AM u cant play with people who have same cd key Share Mousemonkey February 13, 2010 10:03:28 AM Best answer selected by mousemonkey. Score 0 Can't find your answer ? Ask ! Get the answer Mousemonkey February 13, 2010 10:03:32 AM This topic has been closed by Mousemonkey Score 0 Can't find your answer ? Ask ! Publish Read discussions in other Video Games categories Console Gaming PC Gaming Handheld Gaming Nintendo Playstation Servers Sims World of Warcraft Xbox 360 !