Microsoft Outlook (iOS)

Register the key pair that will be used with Microsoft Outlook on iOS.

An iPhone 8 device loaded with iOS 11.4.1 is used in this example.

[ Reference ]

  • It is strongly recommended that you install the certificate only on a single device. We do not support the installation of a single certificate on multiple devices.
  • The procedure may vary depending on the model of your device and the version of the OS.
    * Contact the device vendor for more information on the specific procedure for your device.

  1. Open App Store and then install Microsoft Authenticator.
  2. Open the downloaded key pair file.

    [ Reference ]

    Key pair files cannot be downloaded in Microsoft Outlook.

    Use a browser to retrieve key pair files beforehand.

  3. Tap "Install."
  4. Tap "Install."
  5. Enter the iPhone passcode and then tap "Done."
  6. Enter the key pair file passphrase and then tap "Next."
  7. Tap "Install."
  8. Start Outlook, enter your ID, and then tap "Add Account."
  9. Tap "Open Authenticator."
  10. Enter your ID and then tap "Next."
  11. Enter your password and then tap "Next."

    [ Reference ]

    If you log in using a temporary password, you need to change your password.

  12. Enter your ID and then tap "Next."

    [ Reference ]

    As of August 2, 2018, Microsoft Authenticator for iOS cannot process certificate requests (CertificateRequset) properly. As a result, the user ID and password for device certificate authentication must be entered twice. Refer to "https://github.com/AzureAD/azure-activedirectory-library-for-objc/issues/1086" for more information.

  13. Enter your password and then tap "Next."
  14. Tap "Continue."