If your organization enables Office 365 Multi-Factor Authentication (MFA), this will apply to all users. This article will show you how to reset a user’s MFA in Office 365.
1. Login Office.com using your admin account. Then click on All apps icon.
2. Click on Admin.
3. Click on Users and then Active users.
4. Click on Multi-factor authentication
5. Select the user you want to reset. Or you can use Search bar to search the user. Click Manage User settings.
6. You have these options: Require selected users to provide contact methods again; Delete all existing app passwords generated by the selected users; Restore multi-factor authentication on all remembered devices.
Please view this step by step video:
