Highlight the files that you want to change category, right click (Windows users) or press Ctrl and click (Mac users) on the files and select “Get Info”.

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Back up your Mac with Time Machine before attempting this process.

i Tunes is a critical component of how a computer interacts with i OS devices, and if you break something during the downgrade then you may not be able to use an i Phone or i Pad with the Mac.

After updating i Tunes to i Tunes 12, it seems impossible to add MP4 to i Tunes.

No matter you drag and drop to add MP4 to i Tunes or import MP4 to i Tunes via “Add File to Library” from “File” menu, the MP4 video, movie or TV shows do not appear in “My Movie” or “TV Shows” in i Tunes.

If you see an "Windows installer package" alert message, follow these steps to try to repair the software through the Windows Control Panel.

If the steps in these articles don't help you fix the issue, you might be able to find a solution through a search of the Microsoft support website.

If you can’t install i Tunes on your Windows PC, or if you see “error 2” or "Apple Application Support was not found" after you install the software, follow the steps below in order.

If you see a different error when trying to launch i Tunes, learn how to fix unexpected quits or launch issues.

As of January 2017, the store features over 2.2 million apps.