Hallo I try to request a ESB Service via JMS from a JBossWS. The Queue is created. The Line which caused the error is ConnectionFactory qcf = (ConnectionFactory) ctx.lookup( "ConnectionFactory" ); After looking in JNDIView I got to know that lookup gives a JBossConnectionFactory. Unfortunately the JBossConnectionFactory doesn't implement the ConnectionFactory Interface. I use jbossesb-server-4.5.GA but I also give jboss-5.0.0.GA a shut but it doesn't worked ether. When I try to install messaging instead of mq, jbpm doesn't work anymore. Can somebody help me please? View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4235851#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...