Azure B2b Authentication in Microsoft tenant not working

Ajay Dandage 0 Reputation points Microsoft Employee

I have configured multitenant access (as shown below) so that guest users can access the app service and my API's. Also configured scope for the impersonation,

User's image

When geust users are trying to access the site and app, they are getting below error, any help would be really appreciated

Error Code: 53003
Request Id: f7b173b0-ed2b-4708-a6e9-aaf9f3920700
Correlation Id: 3116c869-9ecb-40d3-9349-caa81e248078
Timestamp: 2023-03-16T05:31:06.770Z
App name: {My app name}
App id: {My app ID}
IP address:
Device identifier: Not available
Device platform: Windows 10
Device state: Unregistered

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. JimmySalian-2011 41,931 Reputation points


    Not sure if you have check Cross Tenant Sync Preview feature in Azure AD External Identities, I will suggest you to review this for collaborations.

    Btw please share your config for this B2B setup, so I can replicate the issue.

    Hope this helps.



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  2. Ajay Dandage 0 Reputation points Microsoft Employee

    Sorry for the delay in response, here is my app configuration, and let me know if i am missing anything

    Authentication: User's image

    API permissions:

    User's image

    Expose an API: Added scope with my applicationID for user_impersonation, mostly to impersonate using swagger API, as i Have another app for my swagger APi

    User's image

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