Can't Authorize or Deauthorize Itunes on Macbook

Okay, I thought I would change my Macbook's name from my full name to something else. I changed it in 2 places on the computer and thought everything was fine. Then when I synced my Ipod Touch everything synced fine except it removed all of the applications and a popup said I was not authorized to use them on this computer. They are in a folder on the computer under Itunes. I changed the name of the computer back to the original name, have repaired permissions on the Macbook and restarted the computer but it still won't work. I have tried to Authorize and Deauthorize the computer through Itunes but I get another popup saying that the directory can not be found or has a permission error and to fix the permissions or deauthorize the computer.
I have no problem connecting to the Itunes store.
What do I need to do to fix this?

I downloaded and reinstalled Itunes and was able to authorize the computer again with Itunes only showing 1 computer authorized. I don't know what happened but was glad it worked and none of my music, apps or anything else was lost.

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How many authorized computers can you authorize on an itunes account?

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How many authorized computers can you authorize on an itunes account?
Five.
where is the option to deauthorize all computers on the itunes account screen in the new itunes 9?
Click here for information.
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"Waiting for changes to be applied": Apple Support Communities
Also look at the previous discussions listed on the right side of this page under the heading "More Like This"

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You could start by upating your Mac OS from 10.4.7 to 10.4.11.
Since you no longer want to fix it, never mind.

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I recently deauthorised all my computers and am in the process of reauthorising the relevant ones.
In the 'Manage Devices', it says I have 2 devises authorised - my iPhone and my Macbook.
I am on my iMac and trying to authorise it. When I click on 'Authorise this computer' it says 'This computer is already authorised'.
I am wondering whether this is issue is causing the iMac to not recognise any of the photos stored on my iPhone?
TIA

Thanks. Just tried that, and result was the same, ie 2 devices authorised, iPhone and Macbook.

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Authorization
Macs: iTunes Store- About authorization and deauthorization.
Windows: How to Authorize or Deauthorize iTunes | PCWorld.
In iTunes you use the Authorize This Computer or De-authorize This Computer option under the Store menu in iTunes' menubar. For Windows use the ALT-S keys to access it. Or turn on Windows 7 and 8 iTunes menus: iTunes- Turning on iTunes menus in Windows 8 and 7.
To deauthorize a computer you don't have:
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.
If you have de-authorized all computers and need to do it again, but your year has not elapsed, then contact: Apple - Support - iTunes - Contact Us.
For more information on authorization and de-authorization: iTunes Store- About authorization and deauthorization.

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Authorization and Deauthorization
Macs: iTunes Store- About authorization and deauthorization.
Windows: How to Authorize or Deauthorize iTunes | PCWorld.
In iTunes you use the Authorize This Computer or De-authorize This Computer option under the Store menu in iTunes' menubar. For Windows use the ALT-S keys to access it. Or turn on Windows 7 and 8 iTunes menus: iTunes- Turning on iTunes menus in Windows 8 and 7.
More On 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.
If you have de-authorized all computers and need to do it again, but your year has not elapsed, then contact: Apple - Support - iTunes - Contact Us.

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WHERE IS THE STORE MENU WHERE I CAN SELECT "AUTHORIZE THIS COMPUTER"?

Authorization and Deauthorization
Macs: iTunes Store- About authorization and deauthorization.
Windows: How to Authorize or Deauthorize iTunes | PCWorld.
In iTunes you use the Authorize This Computer or De-authorize This Computer option under the Store menu in iTunes' menubar. For Windows use the ALT-S keys to access it. Or turn on Windows 7 and 8 iTunes menus: iTunes- Turning on iTunes menus in Windows 8 and 7.
More On 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.
If you have de-authorized all computers and need to do it again, but your year has not elapsed, then contact: Apple - Support - iTunes - Contact Us.

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Authorization and Deauthorization
Macs: iTunes Store- About authorization and deauthorization.
Windows: How to Authorize or Deauthorize iTunes | PCWorld.
In iTunes you use the Authorize This Computer or De-authorize This Computer option under the Store menu in iTunes' menubar. For Windows use the ALT-S keys to access it. Or turn on Windows 7 and 8 iTunes menus: iTunes- Turning on iTunes menus in Windows 8 and 7.
More On 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.
If you have de-authorized all computers and need to do it again, but your year has not elapsed, then contact: Apple - Support - iTunes - Contact Us.

HT1420 Can't authorize my computer

I cannot figure out how to authorize my computer (Windows8) to access previous purchases that were made on a different laptop. When I follow the instructions "From the Store menu, choose Authorize This Computer" I don't have that option. Any advice?

Authorization and Deauthorization
Macs: iTunes Store- About authorization and deauthorization.
Windows: How to Authorize or Deauthorize iTunes | PCWorld.
In iTunes you use the Authorize This Computer or De-authorize This Computer option under the Store menu in iTunes' menubar. For Windows use the ALT-S keys to access it. Or turn on Windows 7 and 8 iTunes menus: iTunes- Turning on iTunes menus in Windows 8 and 7.
More On 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.
If you have de-authorized all computers and need to do it again, but your year has not elapsed, then contact: Apple - Support - iTunes - Contact Us.

How to authorize mac for itunes

How do I authorize my mac for itunes

Authorization and Deauthorization
Macs: iTunes Store- About authorization and deauthorization.
Windows: How to Authorize or Deauthorize iTunes | PCWorld.
In iTunes you use the Authorize This Computer or De-authorize This Computer option under the Store menu in iTunes' menubar. For Windows use the ALT-S keys to access it. Or turn on Windows 7 and 8 iTunes menus: iTunes- Turning on iTunes menus in Windows 8 and 7.
More On 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.
If you have de-authorized all computers and need to do it again, but your year has not elapsed, then contact: Apple - Support - iTunes - Contact Us.

I can't authorize my Macbook Pro with iTunes in order to sync with my iPad

I can't authorize my Macbook Pro with iTunes in order to sync with my iPad

There was an error storing you authorization information on this computer.
The required file was not found or has permission error. Correct this permissions problem and try again, or deauthrize this computer if the permission cannot be changed.
That was when I was trying to buy the pages app. The reason I was so I could store and use the ICloud between my compert and my IPad.

I can't deauthorize old computers because I can't authorize my new one

I used iTunes on my old Windows computers years ago, and on old ipods. I no longer have any of the devices. I broke down and bought a Macbook Pro. When I tried to use iTunes, I discovered that I could not authorize it on my new computer because I already had five authorizations.
I searched help and tried to deauthorize all of my computers so I could authorize this one. And there is the catch-22. I cannot use Deauthorize All because my new computer is not authorized...but I can't authorize it because I already have too many old authorizations.
Any ideas how I can deauthorize all my old ones?

Click here and ask the iTunes Store staff for assistance.
(102547)

De-authorizing itunes? Several of my authorized pc's have died, and have no way to deauthorize iTunes on them. Now I am unable to synch purchases on my Iphone to new computer with iTunes because I already have 5 computers authorized. What can be done?

Several of my authorized pc laptops and desktops have completely died over the years, and have no way to deauthorize iTunes on them. Now I am unable to synch purchases on my Iphone to new computer with iTunes because I already have 5 computers authorized. What can be done?

Deauthorise all to reset to zero, then authorize again.
Following quote from Apple Support:
If you need to authorize your new computer and are unable due to already having five authorized computers, you can deauthorize all computers by doing the following:
Click iTunes Store on the left side of iTunes.
If you're not signed in to the store, click the Account button, then enter your account name and password.
Click the Account button again (your Apple ID appears on the button), enter your password, and then click View Account.
In the Account Information window, click Deauthorize All.
Note: You may only use this feature once per year. The Deauthorize All button will not appear if you have fewer than two authorized computers. If you need assistance on using this feature, please contact iTunes Store support via email (http://www.apple.com/support/itunes/store/).

Can't Authorize or Deauthorize Itunes on Macbook

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