Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Hello @Alessia Couvreur
Welcome to Q&A forum!
I am very sorry to hear that you lost the sole admin rights of both tenants, and I also deeply understand why you want to resolve this quickly since you have all the necessary information.
However, I need to clarify first that I am the forum moderator, and I am not authorized to access any backend information from customers due to privacy and security concerns.
I will try to provide all the information I can so you can reach the Data Protection Team as soon as possible. If anything comes up during the process, you can reach out again to see if I can help you further.
In this situation, because you are the only global admin of this tenant, you can try step 1 and 2 to get support from Data Protection Team.
Since this is a complex issue related to your account and may require assistance from our backend engineering team, please be patient and carefully follow the steps I’ve provided.
1. Contacting Microsoft Data Protection team by phone support
In this situation, the Microsoft Data Protection team has tools and processes in place to verify identity and regain access to administrator accounts.
Therefore, if you are the only administrator in your organization, then you need to involve Microsoft data protection team. Please try to find the related hotline number to call the frontline let them raise a ticket for you: Customer service phone numbers - Microsoft Support
*(Important Note: Depending on your country or region, 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, this is an automated conversation: First, when you call the hotline, they will ask you what kind of problem you are struggling with.
Answer: Authenticator.
A: What products do you use?
B: Office 365 for business.
Verification: Education or company account?
B: For companies
A: Are you an administrator?
B: Yes.
A: Are there any other administrators in your organization?
B: No.
A: I need one.... Service request?
B: Yes
If your organization's Office 365 Business subscription is from a partner or reseller, and the global administrator is unable to open a service request on your end, contact the reseller's support provider to help open a service request on behalf of you instead.
Please try 2 or 3 times until you can reach out to an agent.
2. Another work around
If you still cannot reach to agent, there is still a workaround, you might consider registering for a new tenant by signing up for a trial subscription. 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.
For detailed guidance, to set up a new tenant, please follow these steps:
- Visit this following link and choose any plan and click try for free to start a free trial: Microsoft 365 Business Plans and Pricing | Microsoft 365
- Follow the guided setup process to create a new account for a new tenant.
Once your tenant is created, you should be able to access the support portal and submit your ticket without further issues
Ticket Support: In the Microsoft 365 Admin Center->Support->Help & Support. You can raise support ticket In Microsoft Admin Center by this link:
https://admin.microsoft.com/#/support/requests
After completing them, you will receive an email appointment for a meeting to review this issue professionally together.
Thank you for your understanding in this matter.
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