Multifactor authentication (MFA) adds a layer of protection to the sign-in process. When accessing accounts or apps, users provide additional identity verification, such as scanning a fingerprint or entering a code received by phone.
During the initial sign-in you'll be asked to configure MFA. We recommend you use the Microsoft Authenticator for either iOS or Android
How often do I need to use MFA?
There is a ‘Remember Me’ option and thus, MFA would only need to be used every 7-14 days. Although we appreciate, this can be perceived a hassle, this extra step is what helps make the email more secure and safe from hackers.
Microsoft Mobile Phone Authenticator App | Microsoft Security
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