Hi, Ram. While we are waiting for Javier's response, could you provide more details about issue you're facing? Your description is a bit too brief. What OIDC flow do you use? What is the full text of error you receive? Have you checked [oxAuth's logs](https://gluu.org/docs/ce/3.0.1/operation/logs/#oxauth-logs) for any clues? I would also ask you to do a capture of your failing flow with **SAMLTracer** Firefox's plugin and share it with us. >Based on other ticket, this issue is solved in jwks endpoint. Could you please provide links on the tickets which, in your opinion, describe the same issue?

Hello Ramkumar, The /userinfo endpoint works well with or without HTTP header "Accept: application/json". Please check the following examples of possible requests to /userinfo endpoint to compare with yours: ``` GET /oxauth/seam/resource/restv1/oxauth/userinfo HTTP/1.1 Host: ce-dev3.gluu.org Authorization: Bearer ad2b0402-2bcf-4a09-a0f8-91e3561bde7e Accept: application/json Cache-Control: no-cache ``` ``` GET /oxauth/seam/resource/restv1/oxauth/userinfo?access_token=ad2b0402-2bcf-4a09-a0f8-91e3561bde7e HTTP/1.1 Host: ce-dev3.gluu.org Accept: application/json Cache-Control: no-cache ``` ``` POST /oxauth/seam/resource/restv1/oxauth/userinfo HTTP/1.1 Host: ce-dev3.gluu.org Accept: application/json Cache-Control: no-cache Content-Type: application/x-www-form-urlencoded access_token=ad2b0402-2bcf-4a09-a0f8-91e3561bde7e ```

We will check and keep you posted. Thanks Regards Ramkumar.C

Hi Ramkumar, Do you want to keep this ticket open?