Hi, I have an issue with my Microsoft account related to a previous B2C tenant. Here's the situation: My primary account is ****** @maincompany.com (from maincompany ). A long time ago, I was added to companyB's B2C tenant as part of a PoC (proof of concept). This B2C tenant belonged to another company we worked with, but we no longer have any association with them, and no one has access to that tenant anymore. Recently, I changed my phone, and I no longer have the MFA for companyB's B2C tenant. The Problem: I can still sign in and access my maincompany services (email, etc.) without issues. However, when I try to: Access the Azure Portal Leave the organization from https://myaccount.microsoft.com/organizations → It first prompts me for my maincompany MFA, which works fine. → Then, it asks me for a second MFA from companyB’s B2C tenant (which I don’t have anymore). → The "Sign in another way" option only shows MFA methods (see images). What I Tried: I followed the steps in this previous post but had no success. I cannot create a ticket from the Azure Portal since I can't log in. How can I remove this companyB B2C tenant from my account or bypass the MFA requirement to leave the organization? Any help is greatly appreciated. Thanks in advance!

Unable to Access Azure Portal & Leave Organization Due to Lost MFA for a B2C Tenant

Tito Luyo Murata 0

Hi,

I have an issue with my Microsoft account related to a previous B2C tenant. Here's the situation:

My primary account is ******@maincompany.com (from maincompany).
A long time ago, I was added to companyB's B2C tenant as part of a PoC (proof of concept).
This B2C tenant belonged to another company we worked with, but we no longer have any association with them, and no one has access to that tenant anymore.
Recently, I changed my phone, and I no longer have the MFA for companyB's B2C tenant.

The Problem:

I can still sign in and access my maincompany services (email, etc.) without issues.

However, when I try to:

Access the Azure Portal
Leave the organization from https://myaccount.microsoft.com/organizations

→ It first prompts me for my maincompany MFA, which works fine.
→ Then, it asks me for a second MFA from companyB’s B2C tenant (which I don’t have anymore).
→ The "Sign in another way" option only shows MFA methods (see images).

What I Tried:

I followed the steps in this previous post but had no success.
I cannot create a ticket from the Azure Portal since I can't log in.

How can I remove this companyB B2C tenant from my account or bypass the MFA requirement to leave the organization? Any help is greatly appreciated.

Thanks in advance!
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Janaki Kota 705 Reputation points Microsoft Vendor

2025-02-13T10:14:03.7+00:00
Hello @Tito Luyo Murata,

Thank you for reaching out to Microsoft Q&A

We understand that you are unable to leave the organization as you are unable to bypass MFA for a B2C Tenant. You have also mentioned that you tried to reset your account by using Forgot my password option which didn’t work for you.

There can be multiple ways to fix this depending on the following scenarios.

For the external organizations listed under other organizations you collaborate with, you might not be able to leave on your own, for example when:

The organization you want to leave doesn’t allow users to leave by themselves or when your account has been disabled as mentioned here.

As an alternative, you can reach out to authentication administrators who can help to reset the password, re-register for MFA, or revoke existing MFA sessions from their user object. They need to follow the below steps to manage other user's settings:

Sign in to the Microsoft Entra admin center as at least an Authentication Administrator.

Browse to Identity > 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 one of the following options for the user:

Reset password resets the user's password and assigns a temporary password that must be changed on the next sign-in.

Require re-register MFA deactivates the user's hardware OATH tokens and deletes the following authentication methods from this user: phone numbers, Microsoft Authenticator apps and software OATH tokens. If needed, the user is requested to set up a new MFA authentication method the next time they sign in.

Revoke MFA sessions clear the user's remembered MFA sessions and requires them to perform MFA the next time it's required by the policy on the device.

Hence once admins complete the above process and you are able to register again through which you can satisfy the MFA prompt to leave the organization.

But if you don’t have association with the admins of the tenant, then unfortunately, there is no other way to get access to the tenant in such scenario as this would be a tenant lockout scenario, and you would need to open a support ticket from any other azure tenant or using Global Customer Service Phone Number (If you don't have any other Azure Account).

Hope this helps. Do let us know if you any further queries.
Janaki Kota 705 Reputation points Microsoft Vendor

2025-02-14T09:14:46.0566667+00:00

Hello @Tito Luyo Murata,

Following up to see if the above suggestion was helpful. And, if you have any further query do let us know.
Janaki Kota 705 Reputation points Microsoft Vendor

2025-02-14T14:26:34.93+00:00

Hello @Tito Luyo Murata**,**

Following up to see if the above suggestion was helpful. And, if you have any further query do let us know.
Tito Luyo Murata 0 Reputation points

2025-02-14T22:43:16.29+00:00

The steps you indicated are if someone can enter that Entra/B2C admin, but as mentioned, none else has access to that tenant.
I also tried the Global Customer Service Phone Number, but it says the support is online and tells me a link that doesn't go anywhere.

And because I can't log in to Azure Portal, I can't create a ticket.

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Unable to Access Azure Portal & Leave Organization Due to Lost MFA for a B2C Tenant

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