What authorizing your computer means and why iTunes requires it

Authorizing your computer for iTunes means telling Apple that this particular device is allowed to play music, movies, and other content you've bought from the iTunes Store. When you buy something from iTunes, Apple attaches it to your Apple ID. Without authorization, your computer can't play that content — even though you own it.

You can authorize up to five computers per Apple ID at any given time. This limit exists so you can't share purchased content across dozens of devices. If you reach five and want to authorize a new computer, you'll need to deauthorize an old one first.

The authorization process is straightforward and takes about two minutes. You'll need your Apple ID and password, and your computer needs an internet connection.

Key Takeaways

  • Authorization links your computer to your Apple ID so it can play iTunes purchases on that specific device.
  • You can authorize up to five computers per Apple ID, and you'll need to deauthorize an old one if you hit that limit.
  • The process requires your Apple ID and password, and your computer must be connected to the internet.
  • If you sell or give away a computer, deauthorizing it first prevents someone else from accessing your iTunes library.

How to authorize a computer on Windows

Open iTunes on your Windows computer. If you don't have iTunes installed, download it from Apple's website first. Once iTunes is open, look at the top menu bar and click Account.

From the Account menu, select Authorizations, then click Authorize This Computer. A window will pop up asking for your Apple ID and password. Enter both and click Authorize. Your computer is now authorized — iTunes will confirm this with a message showing your Apple ID and how many computers you have authorized in total.

If you don't see an Account menu at the top, your menu bar may be hidden. Press Ctrl + B on your keyboard to make it visible.

How to authorize a computer on Mac

Open iTunes from your Applications folder. In the menu bar at the very top of your screen, click Account. (On newer Macs running Monterey or later, you may see Music instead of iTunes — the process is the same.)

Select Authorizations, then click Authorize This Computer. Enter your Apple ID and password when prompted, then click Authorize. You'll see a confirmation message with your Apple ID and the total number of authorized computers.

What to do if you've reached your five-computer limit

If you try to authorize a sixth computer and get a message saying you've hit your limit, you need to deauthorize one of your old computers first. You can only deauthorize a computer by using that computer itself — you can't do it remotely from another device.

Go to the computer you want to remove from your account. Open iTunes (or Music on Mac), click Account in the menu bar, select Authorizations, and click Deauthorize This Computer. Enter your Apple ID and password. That computer is now removed from your list, and you can authorize a new one.

If you no longer have access to one of your five authorized computers — for example, you sold it or it broke — you can deauthorize all five computers at once from Apple's website. Go to appleid.apple.com, sign in with your Apple ID, scroll to Security, and look for the option to deauthorize all devices. After you do this, you'll need to re-authorize each computer you still use.

Why you should deauthorize before selling or giving away a computer

If you're selling, trading in, or giving away a computer, deauthorize it before it leaves your hands. If you don't, the new owner can play any iTunes content tied to your Apple ID. They won't be able to buy anything or change your account settings, but they will have access to your music and movies.

Deauthorizing also frees up one of your five authorization slots, so you can authorize a replacement computer later without hitting the limit.

Troubleshooting authorization problems

If you get an error message when trying to authorize, the most common cause is an outdated version of iTunes. Make sure you have the latest version installed. On Windows, open iTunes and check Help > Check for Updates. On Mac, open the App Store and check for updates there.

If your internet connection is unstable, authorization may fail partway through. Close iTunes completely, restart your computer, and try again once your connection is stable.

If you see a message saying your Apple ID or password is incorrect, double-check that you're using the right Apple ID — it's usually an email address. If you've forgotten your password, visit iforgot.apple.com to reset it before trying to authorize again.

Frequently Asked Questions

Can I authorize a computer without an Apple ID?

No. You need an Apple ID to authorize any computer. If you don't have one, you can create it for free at appleid.apple.com. You'll need an email address and a password.

Do I need to authorize my phone or tablet for iTunes?

No. Phones and tablets don't need authorization the way computers do. They use your Apple ID to download and play iTunes content, but the authorization system only applies to computers running iTunes or Music.

What happens if I authorize a computer and then never use it?

Nothing bad happens. It just stays authorized and counts toward your five-computer limit. If you want to free up that slot, you can deauthorize it anytime by going back to that computer and using the deauthorize option.

Can I authorize someone else's computer with my Apple ID?

Yes, but be cautious. Anyone using that computer will be able to play all your iTunes purchases. If you share a household computer, this is fine. If it's someone else's personal computer, they'll have access to your entire iTunes library.

Do I need to re-authorize after updating iTunes?

No. Updating iTunes doesn't affect your authorization. Your computer stays authorized even after you install a new version.