Those two lines are a bit strange: InitialContext ctx = new InitialContext(env); | | InitialContext ctx = b.getInitialContext(); I guess, that line 60 is the one with the error? Do you use an application client or a web client? For application clients, you MUST specifiy the JNDI connection properties on creating the InitialContext: Properties props = new Properties(); | props.setProperty(Context.INITIAL_CONTEXT_FACTORY, "org.jnp.interfaces.NamingContextFactory"); | props.setProperty(Context.URL_PKG_PREFIXES, "org.jboss.naming.client"); | props.setProperty(Context.PROVIDER_URL, "jnp://localhost:1099"); | | InitialContext initialContext = new InitialContext(props); Hope this brings us a bit further (though I am not really a professionel on JAAS) Wolfgang View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4185087#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...