How to Authorize iTunes

To authorize iTunes is to confirm your Apple ID so the app can verify and download purchases on a given computer. This article explains how to authorize iTunes on macOS and Windows, how to view and deauthorize machines, and how to resolve common sign-in or playback issues. The steps below assume you have the latest version of iTunes installed and your Apple ID credentials available.

What authorization means in iTunes

Authorization links your Apple ID to a computer, allowing iTunes to play DRM-protected content you acquired from the iTunes Store. Up to five computers can be authorized per Apple ID at any time. Only apps running under the authorized Apple ID account can access protected content. Authorization is not required for streaming via Apple Music if you use the same Apple ID and two-factor authentication; it is specifically required for purchased or rented video files in iTunes.

How to authorize iTunes on macOS

On Macs running macOS Catalina or earlier, iTunes is the native app for purchased media. On macOS Big Sur and later, Apple Music, Apple TV, Podcasts, and Books are separate apps, but the steps below still apply where iTunes is present.

Open the iTunes app.
Sign in with your Apple ID if you are not already signed in: choose Account > Sign In from the menu bar.
Enter your Apple ID and password, then click Sign In.
If authorization is not automatic, choose Account > Authorizations > Authorize This Computer.
Enter your password again when prompted and click Authorize.

You should see a message confirming the computer is authorized. If you use multiple monitors or external displays, ensure iTunes is active on the primary display if sign-in prompts do not appear.

Authorize multiple computers with the same Apple ID

Repeat the steps above on each Mac you want to authorize. Remember the five-computer limit. If you need to authorize more than five, you must deauthorize older machines first, as described later.

How to authorize iTunes on Windows

On Windows PCs, iTunes behaves similarly, but system differences can affect prompts and permissions.

Open iTunes from your desktop or Start menu.
Select Account > Sign In from the top menu.
Enter your Apple ID and password and select Sign In.
If needed, go to Account > Authorizations > Authorize This Computer.
Confirm the authorization prompt and sign in again if requested.

Windows User Account Control may ask for permission to make changes; click Yes to continue. If you installed iTunes for all users, you may need administrator credentials to authorize.

Check and manage authorized computers

You can review which devices are authorized and remove access as needed. Note that devices listed in Account Settings may refer to computers, not iOS devices.

View authorized computers in iTunes

Open iTunes and sign in with your Apple ID.
Choose Account > View Account.
Sign in again if prompted.
Scroll to the iTunes in the Cloud section.
Under Manage Devices, you will see a list of authorized computers and the date they were authorized.

Deauthorize a computer

To remove authorization from a machine you no longer use:

Open iTunes and sign in.
Choose Account > Sign In, then sign in again to ensure you are in Account view.
Select Account > Authorizations > Deauthorize This Computer.
Confirm the action.

If you no longer have access to a device, you can deauthorize all machines and then reauthorize the ones you trust:

In Account > Authorizations, choose Deauthorize All.
Sign in and reauthorize only the computers you currently use.

Common issues and troubleshooting

Even after following the steps above, you might encounter error messages or be unable to play purchased content. Below are typical causes and fixes.

Wrong Apple ID or password

Make sure you are signing with the Apple ID used to make the purchases. If you made purchases with a different Apple ID, that content will not authorize on the current computer.

Date and time settings

Incorrect system time can cause authorization failures. Ensure your computer sets date and time automatically via Settings or System Preferences.

Antivirus or firewall interference

Some security software blocks iTunes services. Temporarily disable non-Microsoft antivirus on Windows or adjust socket filtering settings if connections fail. On macOS, check Security & Privacy only if you see explicit blocking prompts.

DRM issues for rented video

Rented video files often have shorter authorization windows tied to the rental period. If a rented item will not play after authorization, try re-authorizing or renewing your rental.

When to deauthorize and reauthorize

Deauthorize when you sell a computer, reinstall the operating system, or stop using iTunes on a device. If you reach five authorizations and need to add a new machine, deauthorize the oldest or least-used computer first. You can perform these steps as often as needed, but Apple may monitor unusual patterns; authorize only devices you actively use.

Quick reference: key account limits

Attribute	Verified Detail	Source Type
Maximum authorized computers per Apple ID	5	Apple Support documentation
Authorization action required for purchased content playback	Yes, for DRM-protected files in iTunes	Apple Support documentation
Content not requiring authorization	Apple Music streams with active subscription	Apple Support documentation
Deauthorization approach for multiple changes	Deauthorize All, then reauthorize trusted computers	Apple Support documentation
Typical cache location on macOS	~/Library/Caches/com.apple.iTunes/	Apple Support and system documentation
Typical cache location on Windows	%temp% directory	Apple Support and system documentation

Best practices and maintenance

Keep iTunes updated to benefit from the latest authorization logic and security fixes.
Use the same Apple ID across purchases to simplify management.
Sign out before lending your computer to prevent unauthorized purchases or playback.
Periodically review authorized devices if you frequently upgrade hardware.

When to contact Apple Support

If you continue to see authorization errors after trying the steps above—such as incorrect password messages, persistent playback blocks, or unexpected device listings—visit apple.com/support or open a request in the Apple Support app. Include error codes and screenshots when possible to speed up resolution.