Unable to delete unused Entra Tenants

Question

Hi,

I am the only global admin and i am unable to delete other unused tenants.

They were created to test out some Entra External ID and now I have lost the MFA for the 2 tenants account.

When I tried to delete the tenant, it asked me for MFA approval or code, but I don't the MFA access anymore on my new phone.

Answer 1

Please understand that as forum moderators, we do not have the tools or sufficient access to make changes to user accounts, including logging in, resetting passwords, or modifying access rights. For your security, only Microsoft Support can assist with these requests.  

Hello Ling Kiin,

Thank you for your question.

Based on what you've described, the main challenge here is that you no longer have access to the MFA method associated with the only Global Administrator account for those test tenants. Since deleting a tenant is a sensitive administrative operation, you'll first need to regain access to the Global Administrator account before the tenant can be deleted.

In this situation, I would recommend contacting Microsoft's Data Protection team. They are the team authorized to verify tenant ownership and assist with account recovery scenarios when access to a Global Administrator account has been lost due to MFA issues.

If you still own or have access to another Microsoft 365 tenant where you are able to sign in to the Admin Center, you may use that tenant to open a support request on behalf of this issue and explain that you need assistance recovering access to the affected tenants. Once the case is created, you can ask the support engineer to engage the Data Protection team for further assistance. Microsoft provides guidance on opening a support request here: Get support - Microsoft 365 admin

If you no longer have access to any Admin Center, I recommend contacting Microsoft Support by phone using the support options available for your region: Contact Microsoft customer support | Microsoft Support

When you call the support number, you may hear an introduction for approximately 30 seconds (for example, suggesting that you visit a website). You can simply wait until the menu options are presented, then press "1" as a business email user, and "1" again for technical support.

In some regions you may initially interact with an automated system, so here is an example of how you can answer the prompts to reach the right team more quickly:   

• What kind of problem are you experiencing?           
• Answer: Authenticator           
• What products do you use?           
• Answer: Office 365 for business           
• Is this for an education or company account?           
• Answer: For companies           
• Are you an administrator?           
• Answer: Yes           
• Are there any other administrators in your organization?           
• Answer: No. I am the only admin in my tenant            
• Do you need a... Service request?            
• Answer: Yes. I need to create a ticket. Please send me direct to the Data Protection Teams.        

During the call, you will be asked to provide information that verifies your identity and proves ownership of the tenant, such as your organization name, billing information, contact email, phone number, or other subscription‑related details.

Once your identity and ownership of the tenant have been verified, the support team can guide you through the available recovery options. After access has been restored, you should then be able to proceed with managing or deleting the tenant as needed.

I hope this helps point you in the right direction.

Best regards,

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Answer 2

I think an Entra tenant cannot be deleted when its only global admin cannot finish MFA, and the next step is signing in to any other tenant you still manage and asking Microsoft support to verify you and help restore that admin’s access so the delete can go through.