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Unable to login guest through app registration

Barry Jordan 21 Reputation points
2021-06-14T13:26:10.807+00:00

Currently have an app registration configured for an external web app.
Login works OK for regular Azure AD accounts, but invited guest users get bounced back to the MS login page starting point after attempting to login. No error messages are seen by the guest user.

No sign-in attempts are seen in the service principal. What could I be missing here?

Microsoft Entra ID
Microsoft Entra ID
A Microsoft Entra identity service that provides identity management and access control capabilities. Replaces Azure Active Directory.
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  1. Marilee Turscak-MSFT 36,811 Reputation points Microsoft Employee
    2021-06-14T21:11:35.25+00:00

    I have seen a very similar redirect issue before with my own Microsoft ID. The usual solution is to clear the browser cache, use a fresh browser, or use an incognito session. Switching to the Brave browser has resolved it in the past for me.

    Are you using federated authentication? If you are using federation authentication and the user does not already exist in Azure Active Directory, the user cannot be invited. https://learn.microsoft.com/en-us/azure/active-directory/external-identities/troubleshoot

    This can also happen if your redirect URIs are not sending the users to the right spot, but this doesn't sound like the case based on your subscription.

    1 person found this answer helpful.

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