Apple Music authorization error on iMac running macOS Big Sur

Apple only actively provide support to the last three versions of macOS. As suggested you could try authorising in the Apple TV app. Alternatively search for Retroactive iTunes and temporarily install the Mojave version of iTunes to see if that will allow you to authorize the computer.

FWIW I think Hanlon's Razor probably covers this one.

tt2

I can confirm that what turingtest2 suggested… installing the Retroactive iTunes app… does enable you to authorize the computer running macOS BigSur. It was the only thing I tried that worked. Retroactive 2.0 is available via GitHub and it’s free.

Hello Jas!

Login through Podcasts app, and when you login in Podcasts It also logs in Apple Music and Apple TV

Hey MisterJAS, same issue here.

I spent hours trying to figure this out with Apple support. Music (Authorizing) works on two newer computers, but my old mid-2014 iMac lost its ability to play music. To the last responder, logging into Music worked fine for me, it's Authorizing that is broken. Also, only two other systems Authorized at the moment.

A reformat and reinstall of Big Sur didn't resolve the issue, and Apple support finally said they couldn't help because of the age of the computer.

Super shady to me. No one was willing to share what Apple saw on their end when the computer attempted to Authorize. Would love to hear if anyone has figured out how to overcome this issue.

This worked for me, I had been trying to figure this out for months. Thank you @AleksMaskov!!

AleksMaskov wrote:

Hello Jas!

Login through Podcasts app, and when you login in Podcasts It also logs in Apple Music and Apple TV