I had to reset my phone and now I cannot get into my outlook work email. It says it’s signing me but can’t complete process

Add the work account by generating a new Microsoft Authenticator QR code from the Security info page, rather than using Sign in inside Authenticator, because your organization’s policy is blocking that in-app registration method.

Register Authenticator again

Since you can access the account from another browser or device:

1. Install or open Microsoft Authenticator on the reset iPhone.
2. On the other device, open the Security info page: https://mysignins.microsoft.com/security-info
3. Sign in with your work account.
4. Select + Add sign-in method.
5. Choose Microsoft Authenticator, select Add, and then select Next until the QR code appears.
6. On the iPhone, open Authenticator and select: + → Work or school account → Scan QR code.
7. Scan the QR code displayed on the other device.
8. Return to the browser, select Next, and approve the test notification in Authenticator. A successful test updates the account’s security information.^1^

Then reopen Outlook and add the work account again. The sign-in should now send approval requests to the newly registered Authenticator installation.

The message about a restricted location or device specifically indicates that your administrator has not enabled credential-based registration for you or has applied a Conditional Access policy. In that situation, QR-code registration through Security info is the documented alternative.^2^

If Security info requests approval from the erased Authenticator

Contact your organization’s IT help desk and ask them to:

1. Open Microsoft Entra admin center.
2. Go to Entra ID → Users.
3. Select your user account.
4. Select Authentication methods.
5. Choose Require re-register MFA.

This removes the old Authenticator registration and prompts you to configure MFA again at your next sign-in.^3^

After the administrator completes that action, repeat the QR-code registration steps above. Do not repeatedly reinstall Authenticator; reinstalling it does not remove the old device registration stored in your organization’s Microsoft Entra tenant.

References

1. Set up Security info from a sign-in page | Microsoft Support
2. Work/school
3. Manage user authentication methods for Microsoft Entra multifactor authentication