If you use this option, you will have to provide a 6-digits code to access your account. This 6-digits have a life-span of 30 seconds.
Setup
First, install the Microsoft authenticator app. I Authenticator for android- Authenticator for Apple
At first activation of MFA or on the page where you change your setting for the MFA, click on “add method”.
Select "Authenticator app" and click on “ADD”
Install first the application on your smartphone. When done, select the “next” button
on the PC, some information is provided on how to use the app. Click “next”
A QR code is shown on the screen
Now, use your smartphone
Launch the Authenticator app.
Click on the 3 dots and select “add an account”
in the type of account, select “work account”
Scan the QR code
The app give you a code.
Go back to the computer.
Select “next”
Open the notification and click on “approve “ on your smartphone. Or type the 6 digits code provided by your smartphone on your computer
Click on “next” on your computer.
it’s done
Each time you access from a new computer or when prompted, open your app and provide the 6 digits code