Enable MFA on O365 accounts

Office 365 global admins can perform these steps. Login into office 365 admin panel.

Click on the Azure Active Directory to enable the Self service password for all the users by click on All and save the changes.




Set up multi-factor authentication in the Microsoft 365 admin center:

In the admin center, go to Users > Active users.
IMPORTANT: BEFORE you select a user, select Multi-factor authentication above the list of users.

Tip : If you don't see the Multi-factor authentication option, then you aren't a global admin for your subscription. Only global admins can enable or disable MFA.

On the multi-factor authentication page, find the people for whom you want to enable MFA. In order to see everyone, you might need to change the Multi-Factor Auth status view at the top.
The views have the following values, based on the MFA state of the users:

Any Displays all users. This is the default state.
Enabled The person has been enrolled in MFA, but has not completed the registration process. They will be prompted to complete the process the next time they sign in.
Enforced The person may or may not have completed registration. If they have completed the registration process, then they are using MFA. Otherwise, they will be prompted to complete the process the next time they sign in.

Select the check box next to the people for whom you want to enable MFA.
On the right, under quick steps, you'll see Enable and Manage user settings. Select Enable.
    In the dialog box that opens, select enable multi-factor auth.