Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Hello @Abdelrahman Ahmed Alshahawy
Since you have lost access to the Global Administrator account and there are no other administrators available in your tenant, you will need to contact the Microsoft Support Data Protection team to have the password access. Please locate the appropriate Microsoft support hotline for work account and contact the frontline support team so they can raise a ticket on your behalf: Customer service phone numbers - Microsoft Support
Please note that this is a user-to-user support forum. Only Data Protection team can help you to revoke the session and reset your password, account, MFA...
Data Protection Team will first verify your ownership of the account and reset your password once confirmed. After that, you can set up the Microsoft Authenticator app again on your new device.
Here are some tips and an example of a prompt to help you navigate the IVR more effectively:
(While calling, you can ignore the 30-second introduction that says "you can visit the link..." and wait until you are presented with the options. Press "1" as a business email user, and again "1" for technical help.)
In some regions, the initial interaction may be automated, here’s a general idea of how the conversation might go to help you prepare:
- 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?
Please feel free to let me know if you have any further concerns about this matter.