Microsoft says business account doesn't exist, cannot sign into business acct or authenticator

Hi @susan t,

Thank you for reaching out. I understand how concerning this situation is - especially when your Microsoft 365 Business subscription is still being billed, but Microsoft reports that the business account doesn’t exist, and you’re unable to sign in or use Microsoft Authenticator.

A/ “Account doesn’t exist” message

Based on the information you’ve shared, it appears that the account you’re trying to access does exist and is recognized by Microsoft as a work (business) account associated with a Microsoft 365 tenant. This indicates that the account is present at the organizational level.

To better understand the sign‑in behavior you’re experiencing, could you please confirm which sign‑in page you’re using?

• https://login.live.com
• or https://www.office.com?

These two pages authenticate different types of Microsoft accounts:

• login.live.com is intended for personal Microsoft accounts (such as Outlook.com, OneDrive Personal, or Microsoft 365 Personal/Family).
• office.com is used for work or school accounts that belong to a Microsoft 365 organization (tenant).

If a work account is entered on the personal account sign‑in page, it can incorrectly appear as though the account “does not exist,” even though it is active and valid within the organization. This often leads to confusing or inconsistent error messages.

As a next step, I recommend signing in through https://www.office.com, which is the correct sign‑in portal for Microsoft 365 Business accounts.

B/ Microsoft Authenticator

If you haven’t already installed Microsoft Authenticator, you can follow this official guide to get started: How to add your accounts to Microsoft Authenticator - Microsoft Support 

You may also find this article helpful for the sign‑in process:  Sign in using Microsoft Authenticator - Microsoft Support   

If you’re able to sign in via https://www.office.com/ but do not receive an authentication code, this typically means that multi‑factor authentication (MFA) for your account needs to be reset.

In this case, please contact your IT administrator and ask them to reset your MFA settings using the steps outlined in the following article: Manage user authentication methods for Microsoft Entra multifactor authentication.

Once MFA has been reset, you’ll be prompted to set it up again during your next sign‑in, which should restore access to your account.

Please note that forum moderators do not have access to user account settings and cannot assist with logging in, resetting passwords, or changing access rights. While we do not have access to internal systems or administrative tools required to resolve account-specific or backend-related issues but we’ll continue doing our best to support you within the scope of our responsibilities.    

I hope this information helps. Please try the steps and let me know whether they resolve the issue. If the problem persists, we can work together to find a solution.  

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Hi @susan t,

Thank you for the detailed explanation.

Based on what you’ve described, the issue is not caused by the Microsoft Authenticator app itself. Instead, your account is stuck in an MFA (multi‑factor authentication) loop. Because MFA is required on the account and the existing authentication methods are no longer valid or accessible, the account must have its MFA reset by an IT Administrator on the service side.

Reinstalling or re‑adding the Authenticator app will not resolve this, as the problem exists at the tenant/account level. This is why you are experiencing repeated sign‑in prompts and errors about invalid or incorrect verification codes until the MFA methods are reset by an admin.

If there is any other Global Administrator in the tenant, they can reset your MFA methods for you by following Microsoft’s official steps here: Manage user authentication methods for Microsoft Entra multifactor authentication.

In short, the admin would:

• Go to Microsoft Entra admin center
• Navigate to Users > Your admin account > Authentication methods
• Remove/reset the existing MFA methods
• Allow you to sign in again and re-register MFA.

If you are the only Global Administrator and cannot sign in due to MFA, this cannot be fixed from the portal or Authenticator app. In this case, Microsoft requires identity verification by their Data Protection team.

Option 1: Contact Microsoft Data Protection Support by Phone (Primary Method)  

To regain access to your admin account as you can't access the Admin Portal, you can try reaching out to our Global Customer Service phone to raise a request for resetting your authentication method here: Customer service phone numbers - Microsoft Support. During the call, request to speak to an agent, and share with them every detail related to your query and also mention that you are the only admin lost access to your account. This should allow you to contact the appropriate team so you can solve this incident as soon as possible. 

Here are some tips and an example of a prompt to help you navigate the IVR more effectively:  

(When you call the support number, you may hear an introduction of about 30 seconds such as "you can visit the link...". You can ignore this introduction and wait until you are presented with the options. Then press "1" as a business email user, and again "1" for technical help.)        

In some countries, it is an automated conversation like: 

IVR: What kind of problem are you concerned about?       

You: Authenticator.       

IVR: What kind of product do you use?       

You: Office 365 for business.       

IVR confirmation: education or company account?       

You: For companies       

IVR: Are you an administrator?       

You: Yes.       

IVR: Do you have another administrator in your organization?       

You: No.       

You: Yes. I need to create a ticket. Please send me direct to the Data Protection Team.   

Option 2: Create a Temporary Account (Trial Tenant) to Submit a Support Ticket (Alternative Method) 

If you still cannot reach to a live agent, there is still a workaround, you might consider registering for a new tenant by signing up for a trial subscription via this link Microsoft 365 Business Plans and Pricing | Microsoft 365. This would allow you to create a new tenant following the prompts provided. Once set up, you can access the admin console of the new tenant and submit a support ticket requesting to speak with the Data Protection team on behalf of your previous tenant.       

Please note that forum moderators do not have access to user account settings and cannot assist with logging in, resetting passwords, or changing access rights. While we do not have access to internal systems or administrative tools required to resolve account-specific or backend-related issues but we’ll continue doing our best to support you within the scope of our responsibilities.   

Please remember to cancel the trial subscription after your issue is resolved, as this will help you avoid any accidental billing. You may prefer the following resource for detailed instructions: Cancel your Microsoft business subscription in the Microsoft 365 admin center | Microsoft Learn.

Please let me know once the MFA reset has been completed, or if you need more guidance. I’m happy to assist further and help ensure you regain access as quickly as possible.

If you found the answer helpful, I would truly appreciate it if you could mark it as accepted. Doing so helps highlight the solution for others who may be searching for similar information in the community. Your contribution not only supports fellow users in finding the right guidance more quickly, but also helps build a more resourceful and collaborative space for everyone. 

Thank you for your understanding.

Warm regards.