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Using Multi-factor authentication with email

Using Multi-factor authentication with email

Office 365 Web Mail

NOTE: If you previously signed up for Duo and are not seeing the Duo prompt in Office 365, please email help@caltech.edu to get this enabled.

  1. Login to Office 365 using your username and password as usual
  2. When prompted for Multi-factor Authentication, click "Send me a Push" to use the smartphone app or click "Enter a passcode" to use your hardware token to approve your login
  3. If you chose "Push", look for a prompt on your smartphone (if it doesn't appear immediately, open the Duo Mobile app) and press "Allow". If you chose "Passcode", make sure your Yubikey is inserted in a USB port on your computer and press the button on the key.

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