How to fix Microsoft authentication app with my new phone if I returned my old phone

Isabella Hutchinson 0 Reputation points
2025-12-20T00:55:13.23+00:00

Hello, I recently got a new phone and my authentication app is not working. I am trying to check my final grades and when I need to type the authentication number, my phone doesn’t receive a notification to do so. I already returned my old phone, so I cannot return to it. What should I do? Thank you in advance.

Microsoft 365 and Office | Other
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  1. Q&A Assist
    2025-12-20T00:56:22.5766667+00:00
    AI generated content. This question contains an answer created with AI from Q&A Assist. Learn more

    To fix the Microsoft authentication app on your new phone, you will need to register and set up Multi-Factor Authentication (MFA) on your new device. Since you no longer have access to your old phone, you can follow these steps:

    1. Contact an Admin: Reach out to another cloud services admin in your organization. They can reset your MFA settings for you.
    2. Admin Steps: The admin should sign in to the cloud service portal, go to the Multi-Factor Authentication settings, select your account, and reset the MFA settings. This will allow you to set up MFA again on your new phone.
    3. Set Up MFA: Once your MFA settings are reset, you can set up the Microsoft Authenticator app on your new phone. Make sure to follow the prompts to link your account and enable notifications for authentication requests.
    4. Testing: After setting up, test the app to ensure that you can receive notifications for authentication requests.

    If you encounter any issues during this process, consider reaching out to your IT support for further assistance.


    References:

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  2. EmilyS726 188.8K Reputation points Independent Advisor
    2025-12-20T01:28:29.2066667+00:00

    Hello,

    When you said you needed to check your final grade, I assume you were trying to access your school account? If so, Microsoft does not directly manage organization users. Instead, each organization's IT administrator is responsible for managing its users according to its internal protocols.

    You should contact your organization's IT support team. They need to reset your MFA for you in order for this to work. Once the reset is completed, follow these steps:

    1. Open your web browser and navigate to https://login.microsoftonline.com.
    2. Sign in to your account.
    3. You will be prompted to set up MFA again. Make sure to update your phone number during this process.

    If your organization's IT administrator requires guidance, they can follow these steps:

    1. Sign in to the Microsoft Admin Center at https://admin.microsoft.com using their credentials.
    2. Navigate to Users > Active Users in the left-hand menu.
    3. Select the relevant user.
    4. On the user card that appears on the right, scroll to the bottom and click Manage multifactor authentication.
    5. On the MFA settings page, locate the user's name, select it, and click Manage user settings on the right.
    6. In the pop-up box, check the first box and click Save.

    This process will reset MFA for the user, allowing them to set it up again.

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