switched phones and can't login

If you're having trouble logging in after switching phones and the Microsoft Authenticator app is asking you to approve the sign-in but you're already logged in, here are some steps you can take:

1. Check for Alternative Sign-In Methods: If you have alternative sign-in methods set up (like SMS or email), try using those to log in instead of relying solely on the Authenticator app.
2. Reinstall the Authenticator App: Sometimes, reinstalling the app can resolve issues. Uninstall the Microsoft Authenticator app from your new phone and then reinstall it. After reinstalling, try adding your account again.
3. Reset Multi-Factor Authentication (MFA): If you're unable to access your account, you may need to contact your organization's admin to reset your MFA settings. This will allow you to set up the Authenticator app again.
4. Contact Microsoft Support: If none of the above steps work, you may need to contact Microsoft support for assistance, especially if you are the only admin for your account.

These steps should help you regain access to your account.

References:

• Microsoft authenticator sending me into a spiral - Microsoft Q&A
• I have a Micrsoft business account and I am the admin and the only user registered under this account. I can't log in because i have replaced my phone and the authenticator doesn't work. - Microsoft Q&A