Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Hi Nawaf,
Good day to you! Thank you for reaching out to Microsoft Community.
Sorry for the inconvenience that you are experiencing. In order to regain access to your account and add your account to the Microsoft Authenticator, we recommend contacting your organization’s Microsoft 365 administrator. Please have your administrator follow the steps shown in the following article: Manage authentication methods for Microsoft Entra multi-factor authentication - Microsoft Entra ID | Microsoft Learn
- Sign in to the Microsoft Entra admin center as at least one Authentication Administrator.
- Identity > See Users > All users.
- Select the user you want to act on, and select Authentication methods. then select Require re-enrollment of multi-factor authentication.
- Require re-register MFA: This disables all previous authentication methods. You'll then be prompted to configure a new MFA authentication method the next time you try to sign in, so you can add a new authenticator app.
If you’re unsure who the Global Admin is within your school account's organization, you can find guidance on locating them here: How do I find my Microsoft 365 admin? - Microsoft Support
If you have any other questions or need assistance with Outlook features, feel free to let me know—I’m here to help.
Best regards,
Jay-Tr - MSFT | Microsoft Community Support Specialist