If you can‘t sync contacts and calendars using iTunes for Windows

Find out how to adjust your security software, sync history, or other settings to sync your iPhone, iPad, or iPod touch with iTunes for Windows.

iPhone, iPad, and iPod touch let you share information with your computer in several ways. If you can't sync your contacts, calendars, or notes using iTunes for Windows and a USB connection, try the options below. If you're using iCloud, get help with iCloud Contacts or iCloud Calendar.

Syncing notes isn't supported with iTunes 12.2.2 or later or iOS devices with iOS 9 or later.

Before you get started

Make sure that you have syncing set up, look for your missing data, then back it up.

Make sure that you have syncing set up

You can sync your iPhone, iPad, or iPod touch with iTunes using USB.

Look for missing data

Depending on your view settings, you might not see all of your calendar events and contacts in Outlook. If you don't see them all, search for them in Outlook. If needed, adjust your view settings so that all contacts and events show up.

Back up your data

Before you try to fix your sync issue, back up your Microsoft Outlook data. The Office Support site has several articles that can help you find and back up your Outlook data.

Check your system requirements

To sync with iTunes, make sure that:

  • You're using Microsoft Outlook 2003, 2007, 2010, or 2013.
  • You store your Outlook data on your computer in a Unicode PST, not on a server.
  • You use a local installation of Outlook 2010 or Outlook 2013, not Click-to-Run. Outlook 2010 and Outlook 2013 have a Click-to-Run installation option, which doesn't let you sync your data. Find more information and support for Click-to-Run, and learn how to switch from Click-to-Run to a local installation.

Make sure that your software is up to date

Use the latest version of your software:

Fix security software issues

Security software might not let iTunes and your iOS device communicate. Some software can prevent iTunes from being able to access your sync data. Learn how to resolve issues between iTunes and security software.

Reset your iTunes sync history

If some of your data syncs, but you see unexpected changes, you might need to reset your sync history. After you reset, you can replace all contact and calendar data on your computer or iOS device with the correct data.

To reset the sync history:

  1. Open iTunes.
  2. Hold down the Control and B keys on your keyboard to open the iTunes menu bar. Then, choose Edit > Preferences.
  3. Select the Devices tab.
  4. Click the Reset Sync History button.

If all of the data on your computer is correct:

  1. In iTunes, select your iOS device from the upper-left corner of iTunes, then click Info.
  2. Scroll down to Advanced. Under "Replace information on this iPhone/iPad/iPod touch," select Contacts or Calendars.
  3. Click Apply.

If all of the data on your iPhone, iPad, or iPod touch is correct:

  1. Remove the contact and calendar information from Outlook.
  2. In iTunes, select your iOS device from the upper-left corner of iTunes, then click Info.
  3. Scroll down to Advanced. Under "Replace information on this iPhone/iPad/iPod touch," make sure that Contacts and Calendars aren't selected.
  4. Click Apply.

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