Hi @ Dean Miley
Thank you for sharing your issue on Microsoft Q&A.
I Understand that you are trying to create a custom external identity provider supporting OpenID Connect in Microsoft Entra External ID. While the console suggests that it is possible, it appears that the only options available are SAML or WS-Fed.
As of now, Microsoft Entra External Identities does not allow you to create a custom external identity provider with OpenID Connect for external tenants. This means you cannot use OIDC with external users through Entra External Identities, despite the console hinting that it is possible.
The console might show options to add identity providers using SAML and WS-Fed, which are supported for external tenants. However, OpenID Connect (OIDC) support is not currently included in this list for external identities.
For additional Information you can refer this document: https://learn.microsoft.com/en-us/entra/external-id/customers/concept-supported-features-customers
Hope this helps. Do let us know if you any further queries.
If this answers your query, do click Accept Answer
and Yes
for was this answer helpful. And, if you have any further query do let us know.
Best Regards.
Harshitha Eligeti.