Sign out of the iTunes & App Store or download a free app

If you still can't see or download your family's shared content, sign out of the iTunes & App Store, then sign back in. To sign out in iOS 8, go to Settings > iTunes & App Store, tap your Apple ID, then tap Sign Out. To sign out in OS X Yosemite, choose Store > Sign Out in iTunes, iBooks, or the Mac App Store. To sign back in, enter your Apple ID and password, then select Sign In. Make sure that you sign in to the iTunes Store using the same Apple ID that you selected for sharing content with your family.

If you don't want to sign out, you can download a free app instead. You might be asked to enter your password.

You don't need to sign out of any other services that use your Apple ID, such as iCloud or iMessage.

To use either iTunes or iCloud Control Panel to keep your mail, contacts, calendars, and tasks updated between your iOS devices and Microsoft Outlook, a full version of Microsoft Outlook 2013 or 2010 must be installed on your hard drive. 



Find additional information and support for Microsoft Office Click-to-Run, and learn about switching from Click-to-Run to a local Microsoft Office installation of Office 2010. 

Sync and save PDFs

To add PDFs to your iTunes library on your computer, drag and drop the PDF into your iTunes Book library. If you're using OS X Mavericks or later, drag and drop your PDFs into your iBooks library using iBooks for Mac.

If you are using Manually Manage Music or Videos, disable the option in the Syncing Summary tab.

To sync a PDF from your computer to iBooks on your iPhone, iPad, or iPod touch:

1. Select your iOS device. (Learn how to sync your data with iTunes.)
2. Click the Books tab.
3. Select Sync Books.
4. If iTunes is set to sync only selected books, select the checkbox next to the PDF you want to sync.
5. Click Sync.

You can also use iTunes to back up your PDF files so that they will restore to your iOS device after you update or restore your software or transfer information to a different device. To transfer PDFs to your computer and back them up, transfer purchases from your iOS device to your computer. These files are not in an iTunes Backup. Learn more about what's contained in iTunes and iCloud backups.

-45054 errors occur when permissions on files or folders that iTunes uses to download purchases are restricted. The full -45054 alert message reads: “We could not complete your iTunes Store request. An unknown error has occurred (-45054).”

To resolve this issue, follow the steps below:

1. If it's open, quit iTunes.
2. Open Finder.
3. From the menu bar at the top of your computer screen, choose View > As Columns.
4. From the same menu bar, choose Go > Go to Folder.
5. In the window that appears, type the phrase:
   /Users/Shared/adi
6. Click Go.
7. Drag the adi folder to the Trash.
8. Open iTunes and try to make a purchase.

iPod, iPod (scroll wheel), iPod (touch wheel), and iPod (dock connector)

1. Toggle the Hold switch on and off. (Slide it to Hold, then turn it off again.)
2. Press and hold the Play/Pause and Menu buttons simultaneously until the Apple/iPod logo appears, about 6 to 8 seconds. You might need to repeat this step.

If the above steps didn't work, try connecting your iPod to a power adapter. Then, plug the power adapter into an electrical outlet, or connect iPod to your computer. Make sure that the computer is turned on and isn't set to go to sleep.

If you still can't reset your iPod, use only one finger from one hand to press the Center (Select) button, and one finger from the other hand to press the Menu button.

When your iPod resets, all of your music and files will be saved. Most settings will be saved as well, including the date and time (unless your iPod lost power and reset when reconnected to power), and customized settings such as your Bookmarks, On-The-Go Playlists, Shuffle, and Backlight timer. Some customized settings might be lost.