I made all that changes. The new classpath is this: | C:\>set classpath CLASSPATH=.;C:\Program Files\Java\jre1.6.0;C:\Program Files\Java\jre1.6.0\bin;C:\Program Files\Java\jre1.6.0\bin\javaw.exe;C:\Program Files\Java\jre1.6.0_02\lib\ext\QTJava.zip;C:\jboss-4.0.4.GA;C:\jboss-4.0.4.GA\server\default\deploy;C:\CS\CS-ejb\setup;C:\Program Files\Java\jre1.5.0_14;C:\Program Files\Java\jre1.5.0_14\bin;;C:\Program Files\Java\jre1.5.0_14\bin\javaw.exe;C:\jboss-4.0.4.GA\client; | In C:\jboss-4.0.4.GA\client; I have the jbossall-client.jar I put it in the Client's Manifest.MF (Client's .jar is in C:\): | Class-Path: jboss-4.0.4.GA\client\jbossall-client.jar; | With this changes I try to execute the command again: | C:\>java -Djava.naming.factory.initial=org.jnp.interface.NamingContextFactory -Djava.naming.provider.url=jnp://localhost:1099 -Djava.naming.factory.url.pkgs=org.jnp.interfaces -jar CS-app-client.jar | and the error result is the next one: | com.gui.funcionalidad.seguridad.controladorPUsuarios lookupUsuariosBean | GRAVE: exception caught | javax.naming.NoInitialContextException: Cannot instantiate class: org.jnp.interface.NamingContextFactory [Root exception is java.lang.ClassNotFoundException: org.jnp.interface.NamingContextFactory] | at javax.naming.spi.NamingManager.getInitialContext(Unknown Source) | at javax.naming.InitialContext.getDefaultInitCtx(Unknown Source) | at javax.naming.InitialContext.init(Unknown Source) | at javax.naming.InitialContext.<init>(Unknown Source) View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4128407#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...