OIDC Connection Creation ValidationError: "response_modes_supported" and "response_types_supported" are not Compatible with Front or Back Channel Connections

Knowledge Articles
1

Overview

This article provides a solution for the following error when creating a new Open ID Connect (OIDC) Enterprise connection:

Something happened while trying to create your connection: ValidationError: “response_modes_supported” and “response_types_supported” are not compatible with front or back channel connections with Auth0

Applies To

  • Open ID Connect (OIDC) Connection

Cause

The metadata returned by the target Identity Provider (IdP) indicates it does not support the response_mode and/or response_type used by the OIDC connection.

Solution

Check the target OIDC IdP’s /.well-known/openid-configuration XML metadata to ensure it can support the exact response_type needed for the OIDC Connection and its chosen channel.

This would be:

  • “response_type=id_token” for front channel

OR

  • “response_type=code” for back channel

The response_type is an indicator of the type of authentication and authorization flow in use: