Additional sign-in or account-related issues within Microsoft Teams for business
Dear @C VC,
To ensure I understand your request correctly and to support you as effectively as possible, I need more specific information from you:
What is the exact message displayed on the screen? Please provide a screenshot with any personal information hidden.
Is this a MFA issue?
Does the verification screen show any part of the phone number, such as the last two or four digits?
Do you recognize the phone number receiving the verification text? Could it belong to a former employee, previous administrator, IT provider, or business partner?
Is there another administrator who can still access the Microsoft 365 Admin Center?
Can you select “Sign in another way” or “I can’t use my Microsoft Authenticator app right now”? If so, what alternative verification methods are offered?
Did you recently change your phone number, mobile device, or Microsoft Authenticator configuration?
Your provided information will help me assist you more promptly and efficiently.