Follow the guide to Enable Multifactor Authentication (Two Factor Authentication) on Microsoft 365 (formerly known as Office365)
Note: Please open a browser and go to https://outlook.office365.com and login
You now need to setup the additional security verification method. You can have more than one method and you can choose between:
Once you have set up your additional security verification(s) click Next.
As the final step of the process, you will be given an app specific password, which can be used to login to applications or devices that don't support 2FA.
Copy and Save the password somewhere temporarily. One application that needs this app password is Microsoft Outlook, so shutdown and restart Outlook. You will be asked for your password. Instead of your normal password, use the app password you have saved.
From now on when you login with your Microsoft Office 365 account, for example when you log into https://portal.outlook.com, you will be required to use the second factor you have set up.
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