Hi Timo, thank you for the article, I have set up our SSO according to your instructions but now after successfull authentication, when Entra ID server redirects back to callback url, I am facing error: HTTP Status Code: 403, Error Code: ORDS-13002 The request cannot be processed because this resource does not support Cross Origin Sharing requests, or the request Origin is not authorized to access this resource. If ords is being reverse proxied ensure the front end server is propagating the host name, for mod_proxy ensure ProxyPreserveHost is set to On Now I can't find a way how to allow CORS on the ORDS server, and obviously Origin of SAML server is not same as Origin of our ORDS server. Did you have similar problem? Thank you