It seems you are experiencing issues with accessing your work account through the Microsoft Authenticator app. Since you are unable to delete the work account from the app and are facing a login issue, here are some steps you can take:
- Contact Microsoft Support: Since you are encountering a problem where you are signed in but not allowed to access your account, it is advisable to reach out to Microsoft Data Protection support. They can assist you in resetting your Multi-Factor Authentication (MFA) settings and help you regain access to your account.
- Use the Support Hotline: You can call the Microsoft support hotline to raise a ticket. When you call, make sure to mention that you are the only admin of your account and explain your situation clearly. This may help you get directed to the appropriate team for assistance.
- Create a Trial Tenant: If you are unable to reach support through the hotline, consider creating a trial Microsoft 365 tenant. This will allow you to log in to the Admin Center and submit a support ticket regarding your locked account. Make sure to provide all relevant details about your locked account in the ticket.
- Follow Up on MFA Reset: If you manage to contact support, request a reset of your MFA settings. This is crucial since the issue seems to be related to the authentication method linked to your account.
These steps should help you in resolving the issue with your work account in the Authenticator app. If you need further assistance, do not hesitate to reach out to Microsoft support directly.
References:
- I cant log in to my business account because it is requiring Authenticator app which I do not have - Microsoft Q&A
- I have a Micrsoft business account and I am the admin and the only user registered under this account. I can't log in because i have replaced my phone and the authenticator doesn't work. - Microsoft Q&A