keycloak Invalid parameter: redirect_uri

Question

When I am trying to hit from my api to authenticate user from keycloak, but its giving me error Invalid parameter: redirect_uri on keycloak page. I have created my own realm

Answer 1

Check that the value of the redirect_uri parameter is whitelisted for the client that you are using. You can manage the configuration of the client via the admin console.

The redirect uri should match exactly with one of the whitelisted redirect uri's, or you can use a wildcard at the end of the uri you want to whitelist. See: https://www.keycloak.org/docs/latest/server_admin/#_clients

Note that using wildcards to whitelist redirect uri's is allowed by Keycloak, but is actually a violation of the OpenId Connect specification. See the discussion on this at https://lists.jboss.org/pipermail/keycloak-dev/2018-December/011440.html