Computer in iTunes Store authorize - you need to do
- Open iTunes (Win / Mac OS) and click in the top menu Leister on "Store".
- Then select the point "This is the authorize this Computer ...".
- Then enter your Apple ID and the corresponding password.
- Confirm and finalize your details with a click on "Author".
- In the end, you will be shown a message about the successful activation of your Computer.

iTunes: PC authorize
Note: Note that you can authorize 5 Computer author.
- You should have already activated 5 computers, you need to authorize another Computer and de-author.
- Click again on "Store" and select "This Computer, de-authorize ...". Then follow the instructions.
Read in another article, 5 tips on how to make your Mac faster make can. This practical tip is based on the iTunes 11.4.0.18.