Resetting MFA

Dear,

Unfortunately, when the only administrator is locked out and MFA verification cannot be completed, this cannot be resolved from the tenant side directly. In such cases, for security reasons, Microsoft requires an identity and ownership verification process to reset MFA for the admin account.

In this case, please guide your customer to contact Data Protection directly.

Option 1: Contact Microsoft Support by Phone  

For a full list of regional numbers, you can also visit this official page: Customer service phone numbers - Microsoft Support. The support team will assist you as soon as possible. 

If you can reach Microsoft by phone, use the official Global Customer Service phone numbers list. Choose your region > your country > if your country lines fail or lack English support, select a nearby country or the United States number, Microsoft explicitly allows this.

To help you navigate the automated phone system (IVR), here’s an example of how the conversation might go:  

IVR: What kind of problem are you concerned about?   
You: Multi-Factor Authentication (MFA) 
IVR: What kind of product do you use?   
You: Office 365 for business  
IVR: Education or business account?   
You: For business  
IVR: Are you an administrator?   
You: Yes  
IVR: Do you have another administrator in your organization?   
You: No  
IVR: Do you need a service request?   
You: Yes  

This should help you get connected to a live support agent who can assist you directly.  

Note: Sometimes, you would hear the computer-generated voice at first, please kindly wait for it to end, and if an agent is available, you would be directed to them and get your support. During peak hours, there might be high call volumes, so we kindly ask for your patience as we work to assist everyone as quickly as possible.

Option 2: Create a temporary tenant to submit a support ticket  

• Go to Compare Office 365 Enterprise Pricing and Plans | Microsoft 365
• Select any plan and click Try for free.  
• Complete the setup to create a new tenant.  
• Once the new tenant is created, navigate to: https://admin.microsoft.com/AdminPortal/Home#/homepage
• In the left-hand navigation menu, click on "Support" and then "Help & support." 

Important: Please remember to cancel the trial subscription once your issue is resolved to avoid any charges.  

I hope these steps will help resolve your issue. If you need further assistance, I am always here to help.   

Thank you for your patience and understanding. I appreciate your continued trust. Hope you having a nice day and really much warm regards to you as well!