Trying to deauthorize PPC mini running iTunes 4

I'm not sure why you are trying to go to that website (Apple's site is http://appleid.apple.com, it doesn't have a .ca on the end of it ; and that site isn't used for deauthorising a computer), to deauthorise a computer you use iTunes on that computer : Deauthorize your computer using iTunes - Apple Support

Is your date & time correct?

Certificates rely on accurate date & time, enable automatic date & time in 'System Preferences > Date & time' if the clock battery is failing to keep it accurate.

I suspect it could also be other certificate issues, but it may be easier to try another Mac - do you have access to other hardware? I have a horrid feeling deauthorise all is the only option.

You had .ca in your post, not /ca, which is wrong.

Your computer's iTunes is up-to-date, and can you access the store e.g. can you view music etc ?

iTunes 10.6.3 on OS X 10.5.8 works with the store (from U.K.). I can authorise, browse, deauthorise in the store.

Have you tried another browser? Firefox may be worth a try - I think it has it's own 'certificate store', so it may work if the system store is broken.

Is the Mac working for other secure sites?

Can you login to https:// Gmail, Amazon or any other httpS site you have a login for? If your certificates are damaged, invalid etc you may be unable to create a secure connection for other sites.

/Applications/Utilities/Keychain Access has a system for updating the certs in the Preferences > Certificates tab, enable OCSP…

On 10.5.8 I have 'best attempt' for OCSP & CRL. With OCSP as the 'priority'. I don't recall changing these so think they may be the default settings.

I don't know how to trigger updates for this system, reboot & see if anything changes! I think it may be triggered by visiting secure sites or it may just be a background job.

What versions of OS & iTunes do you have installed? iTunes 4 seems old - the store was introduced in that version. Check software update again 🙂

Overall what is your aim?

I know you want to deauthorise this in iTunes, but you could just erase the disk instead. A new owner could still play your files, however that would first need to access them e.g. they would probably need your Apple ID password unless you gave them the files.

Are you trying to make the Mac into a working state for the new owner? Frankly a reinstall would do that if you have the install disks.

I'm not sure how to update the certificates on 10.3, sorry.

Yay 🙂

I'm glad it helped.