Enabling Multifactor Authentication on Your Online Accounts
Multi-factor Authentication (MFA) requires users to enter more information than just a password when signing into online accounts.
Enabling MFA allows your online accounts to be more secure!
If MFA is enabled on your online account, after you enter your username and password when signing in for the first time on a new device or app, you will then need to enter a second factor. A factor in authentication is a way of confirming your identity when signing in. One factor is a password entered with your username, while another factor could be a time-based one-time password (TOTP) using the Microsoft Authenticator app.
For more information on MFA, please visit Microsoft Support (What Is: Multifactor Authentication).