Step 1: Answer in English

If you deauthorize all your computers on iTunes, it means you are revoking their authorization to play DRM-protected content that you have purchased or downloaded from the iTunes Store. This is useful if you have sold, given away, or lost a computer and you no longer want it to have access to your iTunes account.

When you deauthorize all your computers, you are essentially removing all the computers that have been authorized to play your DRM-protected content. This means that you will need to authorize each computer again in order to play this content on them.

To deauthorize all your computers, follow these steps:

1. Open iTunes on your computer.
2. Click on the "Store" menu.
3. Select "Deauthorize This Computer".
4. Enter your Apple ID and password.
5. Click on the "Deauthorize" button.

Once you have deauthorized all your computers, you will need to authorize each computer again in order to play DRM-protected content on them. To do this, follow these steps:

1. Open iTunes on your computer.
2. Click on the "Store" menu.
3. Select "Authorize This Computer".
4. Enter your Apple ID and password.
5. Click on the "Authorize" button.

You can authorize up to 5 computers at a time to play DRM-protected content from the iTunes Store.

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When you deauthorize a single computer, you don't lose content. The same applies to if you choose to deauthorize all computers. You just won't be able to access the content that you bought from iTunes on those computers until you reauthorize them. You need to have the computer to reauthorize it.read more >>