Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Hello @MukeshAdhikari-2249,
Based on the information you shared, I understand that you are having an issue related to your Microsoft Authenticator app, which is not working as expected and you have no alternative MFA method such as Phone or email.
Since you are the only user or administrator of the tenant, you will need to contact the Microsoft Support Data Protection team to have your MFA reset. Please locate the appropriate Microsoft support hotline 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 revoke your MFA 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:
(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 regions, the initial interaction may be automated, so 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?
- 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.
Feel free to let me know if there are any updates or if you have further questions regarding this issue.