On your phone, visit this web page to download the Microsoft Authenticator app, or follow these QR codes:
https://www.microsoft.com/en-ca/security/mobile-authenticator-app
Microsoft provides detailed instructions on how to Add your Work or School Account to the Microsoft Authenticator App.
After you set up your security verification methods for your work or school account, you can update the related details.
Follow these instructions from Microsoft to Change your two-step verification method and settings
Follow these instructions from Microsoft to Set up a phone call as your verification method
If you have been provided a security key, also known as a YubiKey, for use with DUO Multifactor Authentication, you will need to register it with Microsoft as well. Follow these instructions from Microsoft to Set up a security key as your verification method.
Need a security key? Complete the form available at Security Key User Documentation. Hardware keys used for convenience (or infrequent use) do not justify the issuance of keys on a permanent basis.