I think I may have got my previous post slightly wrong. Problem I am facing is that my keycloak server is running behind a proxy. My keycloak server is running on *pc-bruce:8100*, but I am accessing it through *pc-bruce:7100*. And I am able to run Jetty adapter as well as Keycloak Installed adapter with *pc-bruce:7100 *like this: { "realm": "myRealm", "auth-server-url": "http://pc-bruce:7100/auth", "ssl-required": "external", "resource": "myClient", "credentials": { "secret": "***********" }, "confidential-port": 0 } But as soon as I put *"policy-enforcer": {} *line in json to enable authorization, I get *Could not obtain configuration from server. This error does not come if either policy enforcer line is removed or if policy enforcer line is kept and port is changed to 8100 (original keycloak port )* Exception trace: java.lang.RuntimeException: Could not obtain configuration from server [ http://pc-bruce:7100/auth/realms/ myRealm /.well-known/uma2-configuration]. at org.keycloak.authorization.client.AuthzClient.<init>(AuthzClient.java:242) at org.keycloak.authorization.client.AuthzClient.create(AuthzClient.java:85) at org.keycloak.adapters.authorization.PolicyEnforcer.<init>(PolicyEnforcer.java:66) at org.keycloak.adapters.KeycloakDeploymentBuilder.internalBuild(KeycloakDeploymentBuilder.java:144) at org.keycloak.adapters.KeycloakDeploymentBuilder.build(KeycloakDeploymentBuilder.java:170) at org.keycloak.adapters.jetty.core.AbstractKeycloakJettyAuthenticator.initializeKeycloak(AbstractKeycloakJettyAuthenticator.java:248) at org.keycloak.adapters.jetty.core.AbstractKeycloakJettyAuthenticator.setConfiguration(AbstractKeycloakJettyAuthenticator.java:174) at org.eclipse.jetty.security.SecurityHandler.doStart(SecurityHandler.java:384) at org.eclipse.jetty.security.ConstraintSecurityHandler.doStart(ConstraintSecurityHandler.java:449) at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68) at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:132) at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:114) at org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:61) at org.eclipse.jetty.server.handler.ScopedHandler.doStart(ScopedHandler.java:120) at org.eclipse.jetty.server.session.SessionHandler.doStart(SessionHandler.java:116) at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68) at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:132) at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:114) at org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:61) at org.eclipse.jetty.server.handler.ScopedHandler.doStart(ScopedHandler.java:120) at org.eclipse.jetty.server.handler.ContextHandler.startContext(ContextHandler.java:784) at org.eclipse.jetty.servlet.ServletContextHandler.startContext(ServletContextHandler.java:294) at org.eclipse.jetty.server.handler.ContextHandler.doStart(ContextHandler.java:741) at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68) at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:132) at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:114) at org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:61) at org.eclipse.jetty.server.handler.ContextHandlerCollection.doStart(ContextHandlerCollection.java:163) at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68) at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:132) at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:114) at org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:61) at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68) at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:132) at org.eclipse.jetty.server.Server.start(Server.java:387) at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:114) at org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:61) at org.eclipse.jetty.server.Server.doStart(Server.java:354) at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68) Caused by: java.lang.RuntimeException: Error executing http method [org.apache.http.client.methods.RequestBuilder@72ec16f8]. Response : null at org.keycloak.authorization.client.util.HttpMethod.execute(HttpMethod.java:106) at org.keycloak.authorization.client.util.HttpMethodResponse$2.execute(HttpMethodResponse.java:50) at org.keycloak.authorization.client.AuthzClient.<init>(AuthzClient.java:240) ... 43 more Caused by: java.net.ConnectException: Connection refused: connect at java.net.DualStackPlainSocketImpl.connect0(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:79) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:589) at org.apache.http.conn.scheme.PlainSocketFactory.connectSocket(PlainSocketFactory.java:117) at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:177) at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:144) at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:131) at org.apache.http.impl.client.DefaultRequestDirector.tryConnect(DefaultRequestDirector.java:611) at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:446) at org.apache.http.impl.client.AbstractHttpClient.doExecute(AbstractHttpClient.java:882) at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82) at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:107) at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:55) at org.keycloak.authorization.client.util.HttpMethod.execute(HttpMethod.java:84) On Tue, Nov 6, 2018 at 2:43 PM Bruce Wings <testoauth55(a)gmail.com&gt; wrote: