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BerndV91's avatar
BerndV91
Copper Contributor
Mar 28, 2025
Solved

Entra External Identities - Sign In with LinkedIn using OpenID Connect error

Hi there,  I would like to add LinkedIn as an identity provider in my Entra External Identities tenant.  We have proceeded according to the following instructions (https://learn.microsoft.com/en-us...
  • Kidd_Ip's avatar
    Mar 30, 2025

    Would suggest take a look at this:

     

    1. Manually Add the Missing Field

    If possible, you can create a custom well-known configuration file that includes the token_endpoint_auth_methods_supported field. Host this file on a secure endpoint and use it as the configuration URL in Entra External Identities.

    1. Contact LinkedIn Support

    Reach out to LinkedIn's support team to report the missing field in their Well-Known Config Endpoint. They may be able to update their configuration or provide guidance on how to proceed.

    1. Workaround Using Custom OIDC Configuration

    Instead of relying on the automatic validation, you can manually configure the OIDC settings in Entra External Identities:

    • Specify the required endpoints (e.g., authorization, token, and user info endpoints) directly.
    • Ensure all other required fields are correctly mapped.

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