Microsoft Security | Microsoft Entra | Microsoft Entra External ID
Managing external identities to enable secure access for partners, customers, and other non-employees
Entra for External IDs has persistent AADB2C90011 error
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Willie Davis
0
Reputation points
I have a user flow that appears to reference a non-existent (or at least no longer existent client id)
We track these errors automatically, but if the problem persists feel free to contact us. In the meantime, please try again.
Correlation ID: 1a48918c-24f5-45c4-8a27-61ee43df17a2
Timestamp: 2025-11-03 15:52:01Z
AADB2C90011: The client id X provided in the request does not match client id Y registered in policy.
Where Y does not exist in the tenant.
I have tried creating new user flows entirely that could never have referenced the Y client ID. But it transfers even to them. How do I fix this?
Microsoft Security | Microsoft Entra | Microsoft Entra External ID
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Rukmini 43,915 Reputation points Microsoft External Staff Moderator2025-11-04T13:06:25.8233333+00:00 Hello Willie Davis,Can you please run the user flow from the Portal?
And make sure you have added X application here and then run the user flow in the portal:
Let me know if any further queries - feel free to reach out!
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Rukmini 43,915 Reputation points Microsoft External Staff Moderator
2025-11-05T09:12:25.12+00:00 Hello Willie Davis, Following up to see if the above provided information was helpful. If you have any further queries do let us know.
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Willie Davis 0 Reputation points
2025-11-06T16:34:59.94+00:00 I've added the application and it has a callback https://localhost/auth/callback. The Run User Flow button does not appear in the portal.
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Rukmini 43,915 Reputation points Microsoft External Staff Moderator
2025-11-06T16:36:31.87+00:00 Willie Davis, Could you please confirm which tenant are you creating user flow? Azure Ad b2c or External ID tenant or Microsoft Entra ID tenant? Please refer https://learn.microsoft.com/en-us/answers/questions/2263682/i-cannot-run-an-external-user-flow-for-self-servic
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Rukmini 43,915 Reputation points Microsoft External Staff Moderator
2025-11-07T09:18:24.5733333+00:00 Hello Willie Davis, Could you please confirm which tenant are you trying to create user flow?
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Willie Davis 0 Reputation points
2025-11-10T14:31:13.9833333+00:00 Sorry, I was travelling the last couple days. Powershell says my tenant type is AAD.
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Rukmini 43,915 Reputation points Microsoft External Staff Moderator
2025-11-11T11:19:19.8466667+00:00 Willie Davis, Please recreate the user flow in Microsoft Entra External ID tenant and try
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Rukmini 43,915 Reputation points Microsoft External Staff Moderator
2025-11-12T11:51:07.7733333+00:00 Willie Davis Following up to see if the above provided information was helpful. If you have any further queries do let us know.
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