Multi-factor authentication (MFA) is a method of confirming a user’s claimed identity in which a user is granted access only after successfully presenting 2 or more pieces of evidence.
Login to your office 365 webmail (https://login.microsoftonline.com)
Located at the top right, click on your profile icon and select “My accounts”.
Click on Security & privacy
Select the Additional security verification -> click the Update your phone numbers used for account security
On the “verification option”, select “Notify me through app” and make sure to tick the “Authentication Phone” & “Authentication App”
After configuring, you will be asked to scan a QR Code which will require you to use your “Microsoft Authenticator” app to scan the code
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