my macbook won't let me sync music or apps as it says my computer is not authorized, even though when I clicked to authorize it it says that it already is. how do i fix this?

Hey CarlyR_,

Thanks for the question. I understand you are experiencing issues related to iTunes Store authorization. The following resources may help to resolve these issues:

iTunes repeatedly prompts to authorize computer to play iTunes Store purchases

http://support.apple.com/kb/TS1389

iTunes: Missing folder or incorrect permissions may prevent authorization

http://support.apple.com/kb/TS1277

Thanks,

Matt M.

Hello CarlyR_,

Thanks for the follow up and additional information. If your issue persists, you may find more information by using another one of Apple's support resources - https://getsupport.apple.com

- Matt M.

Have the same problem. iTunes does not sync apps which have been updated on my new MacBook Pro. The MacBook is authorized for my iTunes account.

I went into the apple store and how it was explained to me was that the new ios7 update made the ipad even more exclusive and personal. So if you have any apps that were downloaded by an ex or a friend using their apple id on your device it won't sync, because updates of apps are tied to apple id accounts. music is not included because songs are not updated. but if you try to delete apps that were not purchased under your apple id it should fix the problem.