Hello I tried to deploy and run a simple EJB tester app on JBoss 5 beta using a SessionBean and I am getting the following exception ----------------------- Exception in thread "main" javax.naming.NoInitialContextException: Cannot instantiate class: org.jnp.interfaces.NamingContextFactory [Root exception is java.lang.ClassNotFoundException:org.jnp.interfaces.NamingContextFactory] ----------------------- I have tried different approaches but with no luck. The structure of my simple_session.ear file deployed in %JBOSS_HOME%/server/default/deploy is this: simple_session/META-INF/Applicaiton.xml simple_session/META-INF/MANIFEST.MF simple_session/beans.jar simple_session/client.jar beans.jar consists of lemonpress\beans\SimpleSession.class lemonpress\beans\SimpleSessionBean.class META-INF\ejb-jar.xml META-INF\MANIFEST.MF client.jar consists of lemonpress\client\SimpleSessionClient.class META-INF\applicaiton-client.xml META-INF\MANIFEST.MF jndi.properties The source of lemonpress\client\SimpleSessionClient.class in client.jar package lemonpress.client; import java.util.Properties; import javax.naming.Context; import javax.naming.InitialContext; import javax.naming.NamingException; import lemonpress.beans.SimpleSession; public class SimpleSessionClient { public static void main(String args[]) throws NamingException{ System.setProperty("java.naming.factory.initial", "org.jnp.interfaces.NamingContextFactory"); System.setProperty("java.naming.provider.url", "localhost:1099"); System.setProperty("java.naming.factory.url.pkgs", "org.jboss.naming:org.jnp.interfaces"); Properties properties = new Properties(); properties.put(Context.INITIAL_CONTEXT_FACTORY, "org.jnp.interfaces.NamingContextFactory"); properties.put(Context.PROVIDER_URL, "localhost:8080"); properties.put(Context.URL_PKG_PREFIXES, "org.jboss.naming:org.jnp.interfaces"); InitialContext ctx = new InitialContext(); SimpleSession ss = (SimpleSession) ctx.lookup(SimpleSession.class.getName()); System.out.println("lookup returned " + ss.toString()); String result = ss.getEchoString("It has worked"); System.out.println(result); } } As a measure of desperation I also included the file jndi.properties in client.jar java.naming.factory.initial=org.jnp.interfaces.NamingContextFactory java.naming.factory.url.pkgs=org.jboss.naming:org.jnp.interfaces java.naming.provider.url=jnp://localhost:1099 and referenced it in client\META-INF\MANIFEST.MF Manifest-Version: 1.0 Class-Path: beans.jar jndi.properties Main-Class: lemonpress.client.SimpleSessionClient initially I ran the project as simple_session> java -jar client.jar Then after reading about in forums (sadly, mostly relating to Jboss 4.x and not much on 5.x) I came to adding more and more code to the SimpleSessionClient.java and modifying way to run the client.jar to resolve this issue of binding the interface to the the JNDI Factory class that should return the missing Application Context. Apart from blown up code in the SimpleSessionClient other things that I tried include running the client.jar as A) simple_session> java -Djava.naming.factory.initial=org.jnp.interfaces.NamingContextFactory -Djava.naming.factory.url.pkgs=org.jboss.naming:org.jnp.interfaces -Djava.naming.provider.url=localhost:1099 -jar client.jar B) simple_session> set CLASSPATH=.;C:\jboss\client\jbossall-client.jar;C:\jboss\lib\concurrent.jar;C:\jboss\lib\jboss-common-core.jar;C:\jboss\lib\jboss-aop-jdk50.jar;C:\jboss\client\concurrent.jar;C:\jboss\client\jboss-common-client.jar;C:\jboss\client\jboss-javaee.jar;C:\jboss\client\jboss-transaction-client.jar;C:\jboss\client\jbosssx-client.jar;C:\jboss\client\jnp-client.jar;C:\jboss\server\default\lib\commons-httpclient.jar;C:\jboss\server\default\lib\jboss.jar;C:\jboss\server\default\lib\jboss-remoting.jar;C:\jboss\server\default\lib\jnpserver.jar;C:\jboss\server\default\deployers\ejb3.deployer\jboss-ejb3.jar;C:\jboss\server\default\deployers\jboss-aop-jboss5.deployer\jboss-aspect-library-jdk50.jar; simple_session> java -Djava.naming.factory.initial=org.jnp.interfaces.NamingContextFactory -Djava.naming.factory.url.pkgs=org.jboss.naming:org.jnp.interfaces -Djava.naming.provider.url=localhost:1099 -jar client.jar As you can see I tried a few different ways of including reference to JNDI to my client but with no avail. I start JBoss with default configuration and it does recognize and register my SimpleSessionBean in JNDI In startup output it gives only one WARN message 17:02:27,265 WARN [QuartzTimerServiceFactory] sql failed: CREATE TABLE qrtz_job_details(JOB_NAME VARCHAR(80) NO T NULL, JOB_GROUP VARCHAR(80) NOT NULL, DESCRIPTION VARCHAR(120) NULL, JOB_CLASS_NAME VARCHAR(128) NOT NULL, IS_ DURABLE VARCHAR(1) NOT NULL, IS_VOLATILE VARCHAR(1) NOT NULL, IS_STATEFUL VARCHAR(1) NOT NULL, REQUESTS_RECOVERY VARCHAR(1) NOT NULL, JOB_DATA BINARY NULL, PRIMARY KEY (JOB_NAME,JOB_GROUP)) However, later it says 17:02:29,437 INFO [StdSchedulerFactory] Quartz scheduler 'JBossEJB3QuartzScheduler' initialized from an externally provided properties instance. 17:02:29,437 INFO [StdSchedulerFactory] Quartz scheduler version: 1.5.2 .... 17:03:01,484 INFO [StdSchedulerFactory] Quartz scheduler 'DefaultQuartzScheduler' initialized from default resource file in Quartz package: 'quartz.properties' It binds JNDI 17:02:25,328 INFO [ConnectionFactoryBindingService] Bound ConnectionManager 'jboss.jca:service=DataSourceBinding,name=DefaultDS' to JNDI name 'java:DefaultDS' And registers my SimpleSessionBean 17:03:03,343 INFO [MCKernelAbstraction] installing bean: jboss.j2ee:ear=simple_session.ear,jar=client.jar,name=client,service=EJB3 with dependencies: 17:03:03,343 INFO [MCKernelAbstraction] and supplies: 17:03:03,640 INFO [ClientENCInjectionContainer] STARTED CLIENT ENC CONTAINER: client 17:03:08,062 INFO [MCKernelAbstraction] installing bean: jboss.j2ee:ear=simple_session.ear,jar=beans.jar,name=SimpleSessionBean,service=EJB3 with dependencies: 17:03:08,062 INFO [MCKernelAbstraction] and supplies: 17:03:08,078 INFO [MCKernelAbstraction] Class:lemonpress.beans.SimpleSession 17:03:10,812 INFO [EJBContainer] STARTED EJB: lemonpress.beans.SimpleSessionBean ejbName: SimpleSessionBean Could anyone help me to resolve this seemingly dead-end situation? Many thanks View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4139939#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...