Sometimes you need to reset MFA for a user. It may be because they have switched to a new mobile device, lost or damaged a previous mobile device or they have switched from Text to number matching as there preferred method of MFA. Either way, it is a simple process.
Steps to reset MFA for a user – Admin
On the admin side, log into https://admin.microsoft.com
Click on Identity / Users / All Users / Per-user MFA
Search for the user you need to reset.
Once you find the user, check the check box next to them and click User MFA Settings just above.
You will see the following display:
Make sure you check “Require selected users to provide contact methods again”.
Steps to reset MFA for a user – User
When the user logs in to any M365 app they will get this prompt:
Mae sure the user has the Microsoft Authenticator app installed on their phone. Click on” Next”
Click Next
Click Next
Open your Authenticator App and Click the “+” button to add an account.
In this case it is a business account we are setting up. Choose Work or School Account
Choose Scan QR Code
Go back to your computer screen. You will see the code to scan:
Use your phone to Scan the QR Code:
The computer screen will send you a two-digit number as a test code. Enter that number into the waiting prompt on your mobile screen.
The test number will have succeeded. Click Next.
You can set up an App password if you want. In this example, we are not.
If you have followed this steps to reset MFA for a user, you will have it done in no time. It is a much more secure way to authenticate a users. I would suggest you always uses this way unless you have no other option!
Dan
I am an IT professional with over twenty years experience in the field. I have supported thousands of users over the years. The organizations I have worked for range in size from one person to hundreds of people. I have performed support from Help Desk, Network / Cloud Administration, Network Support, Application Support, Implementation and Security.