[keycloak-user] IdP Initiated Login Redirects To Required Actions NULL

[Marcin Miklasz]

Problem seems to be triggered in
AuthenticationProcessor.redirectToRequiredActions()

There is the following comment in the code:

    public static Response redirectToRequiredActions(KeycloakSession
session, RealmModel realm, ClientSessionModel clientSession, UriInfo
uriInfo) {



        // redirect to non-action url so browser refresh button works
without reposting past data

but with Idp Initiated login to the broker, browser response is

No webpage was found for the web address:
https://<broker-root>/auth/realms/<realm name>/login-actions/null

HTTP ERROR 404


Please advise what is causing this issue?


Using Keycloak version 2.5.1 configured as below:



   1. SAML client with IDP Initiated SSO URL specified in Keycloak Broker
   instance
   2. SAML Identity Provider setup: First Login Flow: First Broker Login,
   Post Login Flow: Blank
   3. Keycloak Broker metadata configured in external IdP
   4. External Idp initiated login results in user created correctly in the
   broker, SAML attribute mappers work but post broker login redirect
   completes with
   5.

   No webpage was found for the web address:
https://<broker-root>/auth/realms/<realm name>/login-actions/null

   HTTP ERROR 404