Microsofts built-in multi-factor authentication system, named Azure Multi-Factor Auth, requires a user to not just enter their password, but also pass a verification process through one of several options. Microsoft has started rolling out a new portal for Active Users in recent weeks to get them into it for you. The next time you login to your Office 365 account, if youre an administrator, click on the Set up. Set up or Learn about enabling two-step verification and. read more about enabling. enabling Office 365.”]
Source: https://grahamcluley.com/office-365-multi-factor-authentication/