Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Good day PAWANI SHARMA
In this situation, I recommend reaching out to your college IT administrator to reset your MFA settings so that you can set up the Microsoft Authenticator app again. In most cases, they also serve as the Global Administrator and have permission to manage user accounts within the school's tenant.
You can send them an email using the guidance below, or simply share this thread with them so they can better understand the issue and assist you more efficiently.
Manage user authentication methods for Microsoft Entra multi-factor authentication
- Sign in to Microsoft Entra - Microsoft Entra admin center
- User -> all users. Select the user you want to act on, and then select "Authentication methods". then select "Require multi-factor authentication re-registration".
Require re-enrollment MFA: This disables all previous authentication methods. You'll then be prompted to set up a new MFA authentication method the next time you try to sign in, so you can add a new authenticator app.
*Note:
- Please note that in this case, you only need to find the global admin of your organization’s tenant. They are the ones who can help you regain access to your account.
- The global admin is usually someone in your school’s IT team or a system administrator. They manage Microsoft 365 settings, licenses, and security.
I hope I’ve been able to help in some way. I look forward to your update.
Kind regards,