I don't see any reason why this shouldn't work differently with org.jboss.invocation.jrmp.server.JRMPInvokerHA than it does with the non-clustered org.jboss.invocation.jrmp.server.JRMPInvoker. As a diagnostic exercise, if you tweak your config to base it off the non-clustered "Standard Stateless SessionBean" and base your invoker config off of conf/jboss-service.xml's "jboss:service=invoker,type=jrmp" bean, does it work? View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4228028#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...