Fix email sync issues or remove a device from your Outlook on the web mailbox

Outlook on the web shows the mobile devices that you use to connect to your mailbox. If you're no longer using a device or a device isn't syncing properly, you can delete it from this list. Doing so removes the partnership between the mobile device and your mailbox, but doesn't delete the email account from your phone. Removing this partnership by following the steps below often fixes sync issues.

  1. Sign in to Outlook on the web.

  2. Choose Settings Office 365 setttings button - looks like a gear next to your name next to your name in the upper-right corner of the page, and then click Mail.

  3. In the left navigation bar, under General, choose Mobile Devices.

    General > Mobile Devices

  4. Select your phone in the list, and then select Remove to delete the device partnership.

    Remove phone from Outlook Web App

  5. Select Yes in the confirmation box.

    If you only want to remove this device from the list, stop here. If you're attempting to fix a sync issue, continue with the remaining steps.

  6. Go to your mobile device and power it off completely.

  7. Restart your mobile device after a few seconds, and then sync your mailbox again.

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