anonymous wrote : No, client doesn't have org.jnp.server.* package. this class should be downloaded from server dynamically during invocation. I did not get this. You are using these classes for JNDI lookup from the client. So shouldn't the jar containing these class files be available in the client's classpath? Did you try adding the jbossall-client.jar in the classpath of the client application? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4130453#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...