I’m unable to log in to SNOW due to an issue with the mobile authenticator. I am receiving the authenticator prompt in SNOW,

If the Authenticator prompt appears during sign-in but no notification reaches the phone, use this sequence:

1. Open Microsoft Authenticator manually on the phone instead of waiting for a pop-up. A pending number match request can already be inside the app.
2. If the app is locked, unlock it first. For work or school accounts, Authenticator may need to be unlocked before the sign-in can be approved.
3. Make sure notifications are enabled for Microsoft Authenticator. Silent or disabled notifications can prevent the prompt from appearing.
4. Confirm the phone has a working internet connection. If needed, switch between Wi-Fi and mobile data.
5. Check that the phone date and time are correct.
6. Update to the latest version of Microsoft Authenticator.
7. If Authenticator was previously active on an older phone, the push may be going to that older device. If available, check the old phone and approve there, then remove the old device from the account.
8. If another verification method is offered during sign-in, use Other ways to sign in or a different method such as SMS.

Since Teams and Outlook are still accessible, the account itself is not fully blocked. If the issue continues after the steps above, send Authenticator logs from the app:

• Open Authenticator
• Go to the app’s top-level menu
• Select Send feedback

For a work or school account, the next step is to contact the IT administrator so the Authenticator registration or MFA method can be checked or reset.

• Microsoft Authenticator FAQs | Microsoft Support
• Sign in using Microsoft Authenticator | Microsoft Support
• Authentication did not complete | Microsoft Support
• Troubleshoot problems with Microsoft Authenticator
• I can use my Authenticator to login my work/school email - Microsoft Q&A