they will also replace it for free if it isnt ur falt once my halo cd for my xbox started falling apart from the midle were the cd is held and tehy sent me a new copy but before that they sent me a copy for pc by accident with a new cd key which i found odd and they let me keep it aswell i didnt have a computer at the time but it helps now and i got it for my xbox again aswell all for free which all shows m$ has preaty good customer service