
It is always a good idea to have more than one authentication method for any platform you use. These days, just a password is not the most secure, even with complex passwords. Multi-Factor Authentication, aka MFA, allows you to secure user logins by adding multiple authentication methods.


I will also walk you through checking to see if Legacy Authentication is being used in your tenant and how to turn it off. In this guide, I will discuss what MFA is, what Legacy Authentication is, and what Modern Authentication is.

Multi-Factor authentication (MFA) is the most recommended way to secure your Microsoft 365 tenant. This is the complete guide to Microsoft Office 365 MFA.
