I cannot authorize my new computer in iTunes because I hit the 5 device limit. However, I cannot deauthorize the old one because it's gone. I also cannot use the deauthorize all computers button because I did last year when I was replacing computers. Is there any other way of deauthorizing computers that no longer exist?
iTunes-OTHER, OS X Mountain Lion (10.8.2)
About De-authorizing Computers (contributed by user John Galt)
You can de-authorize individual computers, but only by using those computers. The only other option is to "de-authorize all" from your iTunes account.
1. Open iTunes on a computer
2. From the Store menu, select "View my Account..."
3. Sign in with your Apple ID and password.
4. Under "Computer Authorizations" select "De-authorize All".
5. Authorize each computer you still have, as you may require.
You may only do this once per year.
After you "de-authorize all" your authorized computers, re-authorize each one as required.
Also, see iTunes Store- About authorization and deauthorization.
Same problem on a new computer. I tried a million things and finally called Apple and had them reauthorize all computers for my old Apple ID. It worked.
Deauthorize old computers
