"straypet" wrote : I now get a "failed to connect to iiop:1099" error message. | Are you using iiop:1099 some place in your code or jndi.properties? For JBoss, the protocol is jnp. And the lookup usually uses jnp://localhost:1099. And please post the entire exception stacktrace. "straypet" wrote : | The reason I use 4.0.0 (Release ID: JBoss [Zion] 4.0.0 (build: CVSTag=JBoss_4_0_0 date=200409200418) is that the application uses java 1.4 (old app). | Petter, i would recommend that you use JBossAS 4.0.5 GA (the latest stable version in the 4.0.x series). 4.0.0 is too old (not that the issue you are running into is related). This wiki shows you that 4.0.5 can be run with JDK 1.4 http://jboss.org/community/docs/DOC-10809 View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4220522#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...