This computer is already associated with an Apple ID

No. I gather that it is a fault on their side and that Apple isn't very eager to discuss it much more than required to fix the problem...

Sorry!

Unfortunately (for Apple) all I've gathered is two non-call-Apple-for-help solutions:

1) Make sure you only have one user who uses a MacOS system for iTunes cloud/match services. OR

2) Purchase your digital music elsewhere. There are other providers, and are less bundled/integrated with Apple product, but if this is an issue that can't be solved by the previous, it seems to be the only option.

The Techbeast entry I linked above is from 12/2011, so Apple's probably known about customers running afowl of this for at least a year. There's been a few iTunes releases since then with no fix, so I doubt it's even considered a bug or missing feature.

Now my music won't play and I get this message. It's true that my son, who has his own account on this iMac, has a separate apple id. So does my wife. We got all these before Apple came up with the family sharing stuff.

So does this means only a single apple id can be used on a given computer? If so, I'm switching from Apple.

Actually, all of a sudden I can't play ANY of my music on MY iMac. Great. This *****.

How do you contact Apple Support? When I go through the website, it says my computer is no longer under warranty and I can't continue. For iTune issues? Really?

Upon further investigation, it turns out that I'm the only one in the family who has iTune match. I'm getting this message, apparently, because I renewed my iTune match after the previous one expired. So I'm paying for this "service," but can't use it because the software is confused.

This is complete and utter crap. I have 2 accounts on my iMac - 1 for me, 1 for my kids. In order to listen to my iTunes music, I had to use 2 of 5 authorizations on one machine. But to be able to d/l material from 2 different accounts iTunes says it's a single machine? Total crap. I can't believe this is somehow OK in Cupertino.

Same problem here. This is ridiculous. I just got a new Macbook Pro Retina and can't use iTunes Match on it because of this error message.

I emailed iTunes Store customer services about this and, although they could not suggest a solution, they did reset the association back to my own Apple ID. It still means that my wife can't use her Apple ID on her user account on the same iMac to download purchases, otherwise we'd be back to the same problem.

I hope Apple are sorting this one out, it's a real pain.

Argh!!! whats the point!><

My girlfriend who purchased an album from itunes as a gift for my birthday from her account, added it to my itunes (which meant she needed to sign me out breifly in order to do so) now when I go to my downloaded I have to wait 90 Days! I dont understand why thats the case! now I can't listen to music which I've payed for!? if I'm honest i think buying music from amazon is much better. they are cheaper, the songs are not bound to one account and can be used on any smartphone or mp3 player.

http://www.amazon.co.uk/MP3-Music-Download/b?ie=UTF8&node=77197031

okay rant over:-)

I have the same problem! its so annoying.

I had a problem with my computer so i had to restore the whole **** thing. Now every time i try to add this computer (the only one i have ever used aside from my iphone5) i get this message

"This computer is already associated with an Apple ID"

I use the same login on my iphone and it works well. I am able to download music from itunes match (i have over 5000 songs)

but what really ****** me off is that i CANT access it on my macbook pro and download it.

I have contacted itunes match through email and so far they have not ressoved the issue. its been about a week of writting back and fourth... I cant seem to find their phone number.

They suggested that i do this:

I would like for you to attempt to set up a new user account and then attempt to turn on iTunes Match. If iTunes Match successfully turns on, please copy the iTunes Media folder from the main user to the new user.

Once the iTunes Media folder has been copied to the new user, please add the content of the folder to the iTunes library by selecting Add to Library from the File menu in iTunes. Then when asked to choose an item, should select the iTunes Media folder that was copied to the user. Now once this is complete, you will need to select Update iTunes Match from the Store menu.

To create a user account, please follow the directions in the follow article:

Mac OS X 10.6: Creating a new user account
http://support.apple.com/kb/PH6651

I have also been able to locate a video showing how to set up a new user account, you can view it here:

http://support.apple.com/kb/VI32

Then to set up your new Library in the new user account, please follow:

iTunes: How to re-create your iTunes library and playlists
support.apple.com/kb/HT1451

And finally, Freddie, now you should be able to Update iTunes Match from the Store menu.

obviosly it did not work and im still not a happy camper. this is what i wrote back:

okay so i have the same account on my iPhone… which is fre********@yahoo.com and i am allowed to access my i tunes match music through my iPhone…. I don't understand why i am unable to do that with my computer. is there anyway you can authorize my computer? it really is a drag not being able to access my music … since i did pay 25 bucks. any suggestions? please help

Apple's response to me was to terminate my iTunes Match subscription. Actually, it turns out that iTunes Match is not really the problem, per se. It's the ability to download music to more than one account on a single computer. I still can't download or play my purchased music from the iTunes store, even though I've paid for it and I no longer have iTunes Match. I could download my music to another computer and transfer the files from it to my main machine. That's a pain in the butt. My wild guess is that this may have to do with some agreement Apple has with the RIAA, becuase it's difficult to see why Apple would want to so aggressively and wilfully alienate its users.

Well I have a macbook air and I have 20 days left before I can 'use it'. I have to say that I am looking towards Android more and more. Samsung have got it together, the OS is great (and, I have to say, better than iOS), maps work and I can play music across all devices. I already have a Kindle fire and so Apple in my mind is in last chance saloon.

You can't bring back Jobs, but you sure can try a bit harder to think about your customers

The restriction and entire situation ***** badly. I only started hitting this problem relatively recently... I suspect it was around when I subscribed to iTunes Match. I'm a bit over all the restrictions, excessive pricing, etc. Quite stupidly, I'm one of the people that actually pays for content, but Apple, the record companies or whoever really go out of their way to make it as inconvenient as possible.Time to buy my content elsewhere.

Similar problem here: One iMac, two user accounts. Mine is the administrator and is associated with my Apple ID. I made a second account for my wife and connected her Apple ID to it, then got this error the first time she opened iTunes: