Explanation/Reference:
Explanation:
Box 1: Enable multi-factor authentication for User1.
Box 2: Instruct User1 to use a mobile phone to complete the registration process.
Box 3: Instruct User1 to create an app password.
(Step 1) First we need to enable multi-factor authentication for this Office 365 users.
(Step 2) After being enrolled for multi-factor authentication, the next time a user signs in, they see a message asking them to set up their second authentication factor.
Any of the following may be used for the second factor of authentication: Mobile Phone Call, Mobile Phone Text Message, Office Phone Call, or Mobile App.
(Step 3) Configure app passwords for non-browser apps (such as ...Outlook etc.).
User1 should create an app password. The app password should then be used to set up Microsoft Outlook.
After the registration process (step 2) has been completed, users can setup application passwords for non- browser apps (such as ...Outlook etc.). This is required because the non-browser apps (such as ...Outlook etc.) do not support multi-factor authentication and you will be unable to use them unless an app password is configured.