how to deauthorize just one computer on itunes
Deauthorize one computer. 1  Open iTunes on the computer you want to deauthorize. 2  menus in iTunes for Windows. 3  In earlier versions of iTunes, you can access this option from the Advanced or Store menus. 4  When prompted, enter your Apple ID and password. 5  Click Deauthorize.ee how many computers you've authorized. Click to open iTunes and sign in to your Account Information, or use the steps below: 1  Open iTunes. 2  Click Sign In and enter your Apple ID. 3  Click your name, and select Account Info from the drop-down menu.