As an admin, you might need to reset a user’s MFA credential. For example, if they have changed devices and no longer have access to their MFA authenticator.
To do this,
- Go to Users & groups and find the user
- Go to the ‘Account’ tab
- Select ‘Reset credentials’

- The user will be sent a new temporary password to log in with, after which they can set a new password and set up a new MFA app