apple, how to authorize a device
As soon as you try to do something that requires iTunes authorization, such as enable iTunes Match, a box will pop up asking you to do so. Just enter the Apple ID and password associated with the content youâre trying to access and Apple will automatically authorize iTunes on your PC or Mac. If youâd like to manually authorize iTunes, just go to the Store menu in the OS X menu bar and select Authorize This Computer. For Windows users, the lack of a menu bar means youâll find this menu by clicking the small icon on the top-left of the iTunes window, illustrated in the following screenshot.
Or follow these steps: 1  Open iTunes. 2  If youâre not signed in, sign in with your Apple ID. 3  Mac: From the menu bar at the top of your computer screen, choose Account > View My Account.  Enter your password, then press the Return or Enter key on your keyboard, or click View Account.