Cannot Log Into Authenticator App

Question

I cannot log into either my school or personal Outlook accounts using my Microsoft Authenticator app. Please don't tell me to update the app or that it's an issue with my phone as I've already done a fresh install on my new out-of-the-box Pixel 10, which is updated to the December 5th, 2025 update (the latest from Google).

When I try to add either account, it sends me to approve a number on my Authenticator app, the very app I'm trying to set up. I never get the pop up to approve the number. On some occasions, I get the message that my account doesn't exist. If it doesn't exist, how come I can log into the accounts from my computer?

I need to know when this will be fixed, as I have an assignment due this week and I can't even view the directions, because the site I need to use is tied to my school account, which is tied to the Authenticator.

I was told that this was limited to my school account and to reach out to the Education team, however, it's clearly not limited to my school account, as I can't access Authenticator on my personal account either.

Answer 1

Dear @Kristen Amrein,

Thank you for posting your question in the Microsoft Q&A forum.

Based on your description, you’re unable to sign in to both your school and personal Outlook accounts because Microsoft Authenticator is prompting you to approve a sign‑in within the same app you’re trying to set up, resulting in a verification loop. You can still sign in successfully from a computer, which suggests the accounts do exist and the issue is related to the Authenticator/MFA setup rather than the device or account validity.

The message indicating that an account “does not exist” can appear if you are signing in using the wrong account type or the wrong sign‑in page.

Microsoft has separate sign‑in portals for different account types:

Personal Microsoft accounts should be signed in at https://login.live.com or https://outlook.live.com

Work or school (business) accounts should be signed in at https://www.office.com or https://outlook.office.com

If you attempt to sign in with a personal account on a work/school sign‑in page (or vice versa), the system may display a message saying the account does not exist, even though the account is actually valid and accessible from the correct portal.

For this reason, please ensure you are using the appropriate sign‑in page that matches the type of Microsoft account you are trying to access.

Secondly, about the issue you cannot use Authenticator app to log in your account. In this case, I recommend you contact to your IT/admin of your school, since your email is a school account, your school IT team or Helpdesk may be able to reset your Multi-Factor Authentication (MFA) settings. This will allow you to reconfigure MFA from scratch on your device. As a forum moderator, I do not have administrative access to change these settings. Only your IT team has the ability to adjust or reset your MFA configuration. You can also refer to this Microsoft support article for more information: Manage authentication methods - Microsoft Entra ID | Microsoft Learn   

I can truly empathize with your feeling when you're facing to this inconvenience. I hope information above can help you resolve your issue. And if you have any other questions, please feel free to reach out.

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Answer 2

It sounds like you're experiencing issues with the Microsoft Authenticator app that could be related to the setup process or account configuration. Here are some steps you can try:

1. Check Account Configuration: Ensure that your accounts are properly configured for multifactor authentication (MFA). Sometimes, if the account isn't fully set up for MFA, it can lead to issues like the ones you're experiencing.
2. Use Alternative Verification Methods: If you're not receiving the approval notifications in the Authenticator app, consider using a different verification method temporarily. For example, you can try receiving a text message or a phone call for authentication instead.
3. Reinstall the App: Although you mentioned you've already done this, it might be worth trying to uninstall the Authenticator app again, reboot your device, and then reinstall it to ensure there are no residual issues.
4. Check for Third-Party Interference: Sometimes, third-party security apps or settings can interfere with notifications. If you have any security apps installed, try disabling them temporarily to see if that resolves the issue.
5. Contact Support: Since you mentioned that this issue might be specific to your school account, reaching out to your school's IT support or the Education team may provide additional assistance, especially if there are specific configurations required for educational accounts.

If the problem persists, it may be a broader issue with the Authenticator app or your accounts that needs to be addressed by Microsoft support directly.

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References:

• Frequently asked questions about Microsoft Entra multifactor authentication
• Microsoft Authenticator issues