Microsoft 365 Exchange Online Video Series:
This is a step by step video on How to Set up Multi-factor Authentication for Office 365 Users using Microsoft 365 Admin Center web interface. You must use multi-factor authentication (MFA), which uses both a password, which should be strong, and an additional verification method like Something you have with you that is not easily duplicated, such as a smart phone or something you uniquely and biologically have, such as your fingerprints, face, or other bio-metric attribute.
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