Lost All Game Progress After Update

btw i have a question. was it a system update or a game update? that might answer a your question...

It sounds like your Gamertag may have became corrupt. I would try deleting your Gamertag from the console, clearing your console's cache, then recovering your Gamertag.



To delete your Gamertag, go to System Settings in the Xbox Dashboard, then
Memory. Select your memory unit, then select Gamer Profiles. Find yours, and select
Delete. Make sure you hit Delete Profile Only, and not Delete Profile and Items!



Then clear your console's cache. Go back to System Settings, then Memory. Hover over your memory unit and press
Y. Select Clear System Cache and confirm.



Once all of that is complete, now it's time to recover your Gamertag. Make sure no one is signed in, and press the
Guide button, then press Recover Gamertag. Make sure you have your Windows Live ID and Password that is associated with your Gamertag and follow the directions on screen.



Hope that helps!

forget it. i just had the update. it screwed up my ability to play games. it says that the discs are not supported. so i cant even play halo reach anymore. crap

so you were playing all this time just for rank? dang and ive been playing for fun stupid me

dont bother contacting MS. if you need help, come to these forums. it'll save you time and one helluva headache...believe me. most of the people who post on here are pretty knowledgeable about the problems the crop up on xbox now and then...and their solution
almost always work too