Applies ToMicrosoft 365 for home Office 365 Small Business Microsoft 365 admin Microsoft 365 for Mac Outlook for iOS

Before you begin:

  • You're on the right page if you're troubleshooting sync issues while setting up your mobile email for the first time.

  • If your email, calendar, and contacts were syncing before and now they don't, see Fix Outlook.com email sync issues. If you don't use an Outlook.com or Microsoft 365 for business account, contact your email provider.

Things to remember:

  • IMAP and POP are sync protocols that are unable to sync calendar, contacts, etc. They can only sync email. What are IMAP and POP?

  • You must have an email provider that uses Microsoft Exchange ActiveSync. Most common providers like Gmail do.

Which email app are you using?

Common questions for the Outlook app:

  • Can I edit contacts in Outlook and have it sync across all my devices? Yes! See this blog post on the new People improvements in Outlook for iOS and Android.

  • Are my phone's calendar events also in the Outlook app's calendar? In order to have your device's calendar events display in your Outlook calendar, they must be added through an account that has been synced to Outlook. For example, if you're adding events to the iPhone calendar, you'll have to sync them to your iCloud account and then add your iCloud account to the Outlook app.

Check your sync settings

Check that Calendar is enabled for your account:

  1. Go to the Calendar in the Outlook app and tap the three lines in the upper left-hand corner.

  2. Under your email accounts, make sure "Calendar" is selected.

    If your email address is not displayed in the list, it's not set up using Exchange ActiveSync. You'll have to delete and re-add your account and make sure not to use IMAP.

Check for calendar sync

Check that access to Contacts is allowed for Outlook:

Steps may vary between devices and between operating systems. If you don't own an iOS or Samsung Android device, use these directions as a guideline:

  • For iOS: Open the Settings app > scroll down and tap Outlook > Contacts and Background App Refresh should be on.

  • For Android: Open phone Settings > Applications > Outlook > Make sure Contacts is enabled.

    Then open the Outlook app and go to Settings > tap on your account > tap Sync Contacts.

Troubleshoot calendar and contacts in the Outlook mobile app

  • In the Outlook app, go to Settings Outlook app settings> Tap the account that is not syncing > Tap Reset Account. Check to see if your account is syncing.

  • If that doesn't work, delete and re-add your email account:

    From Settings Outlook app settings, tap the account that is not syncing > tap Delete Account > Delete From This Device.

    Then re-add your email account in Outlook for Android or Outlook for iOS.

    Note: If you're prompted to set up your email as an IMAP account, your email provider may not be able to sync calendar and contacts. Contact them or your administrator for help. If you're asked to enter server settings, you need to get server settings from your provider.

  • Still not working?

    1. Set up the email on your PC Outlook Client using the Exchange protocol. 

    2. Verify the connection, test emails, and create events. Now close Outlook.

    3. Restart the PC.

    4. Open Outlook on the PC, verify that the test event is populated in your calendar, and then check your mobile device. You will find that now they sync.

    5. If the event still doesn't show on your mobile device, in the Outlook app, go to Settings and restart the app.

Having trouble? We can help.

  • If you have a work or school account that uses Microsoft 365 for business or Exchange-based accounts, talk to your Microsoft 365 admin or technical support.

  • Contact Microsoft support for questions related to the Outlook app or Outlook.com accounts.

If you still need help syncing your calendar or contacts to your mobile device, tell us about your question in detail using the comment box below so we can address it in the future. For the easiest way to manage email, calendar, contacts, we recommend the Outlook for Android or Outlook for iOS mobile app.

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