Can't access B2C tenant using MFA code

Hello @RT •
I understand that you are unable to authenticate via MFA for your Azure B2C Tenant. Are you unable to access the code from your mobile device or switch to the B2C tenant?

In this Scenario, you can Reset your MFA settings by requesting assistance from another global administrator in your B2C tenant. They can achieve this by selecting the Require re-register multifactor authentication option. This will help you to reconfigure your MFA.

Steps for the Global Administrator to revoke MFA sessions and re-register for MFA.

• Sign in to the Azure portal.
• In the left menu, select Microsoft Entra ID> Users > All users.
• Choose the user you wish to perform an action on and select Authentication methods. At the top of the window, then choose “Require re-register MFA” options for the user.

Reference: Manage user authentication options.

If you don’t have another global administrator available to reset your registered MFA, this situation would fall under a tenant lockout scenario. To resolve this, we need to engage the Data Protection team via a support ticket to unblock your access.

To proceed, I will need a few details from you. As this information contains Personally Identifiable Information (PII), please share the following details via private message:

• Contact phone number (add +Country code)
• Contact email address
• Global admin email address (affected account)
• Country
• TimeZone

We can then discuss further and assist you in resolving this issue.

Hi,

In this case you need to call up the support desk and provide the identity proof as the Data Identification team will cross check the details you provide with the account to recover the account and access to the B2C Tenant.

https://support.microsoft.com/en-us/topic/global-customer-service-phone-numbers-c0389ade-5640-e588-8b0e-28de8afeb3f2

Hope this helps.

JS

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Hello @RT •
We haven’t heard from you on the last response and was just checking back to see if you have a resolution yet. Do let us know if you have any queries, we are happy to assist you further.