how come a mac computer does not.need a registry cleaner

(Trying to play a DRM-controlled file like a purchased movie will also bring up the authorization dialog box, forcing you to log in before you can play the file.) To authorize or deauthorize your Mac, look at the Account: Authorizations submenu. This number is the number of Macs or PCs that have explicitly authorized iTunes. If you choose Account > View my Account in iTunes, iTunes will tell you how many Computer Authorizations you have. Apple dropped digital-rights management from music sales in 2009, but the restriction still exists for other digital media Apple sells, most notably video. In short order, that number was increased to five computers.

When Apple launched the iTunes Music Store in 2003, you could only play iTunes music on three different computers, but an unlimited number of iPods.

It’s a bit confusing, since there are multiple lists, with different restrictions, measuring different things! Here are the ways the Apple counts what you’ve got–and what it lets you do with those lists. As a result, I’ve gotten some insight into all the lists Apple keeps about your personal constellation of Apple hardware. I’ve used a lot of Macs and iOS devices over the years, and reviewed a whole bunch more.

How come a mac computer does not.need a registry cleaner