Hi, I'm using JBoss4.2.2 with Eclipse 3.3. When I try to deploy 2 different EARs (both has Stateless Session), I'm getting the following exceptions. Could not start deployment: file:/D:/jboss-4.2.2.GA/server/default/tmp/deploy/tmp39385JBossSampleEar.ear-contents/FirstEjb.jar org.jboss.deployment.DeploymentException: Failed to setup client ENC; - nested throwable: (javax.naming.NameAlreadyBoundException) at org.jboss.deployment.ClientDeployer.start(ClientDeployer.java:175) at org.jboss.deployment.MainDeployer.start(MainDeployer.java:1025) at org.jboss.deployment.MainDeployer.start(MainDeployer.java:1015) at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:819) at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:782) at sun.reflect.GeneratedMethodAccessor20.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155) at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94) at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:133) at org.jboss.mx.server.Invocation.invoke(Invocation.java:88) at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:142) at org.jboss.mx.server.Invocation.invoke(Invocation.java:88) at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264) at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659) at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210) at $Proxy9.deploy(Unknown Source) at org.jboss.deployment.scanner.URLDeploymentScanner.deploy(URLDeploymentScanner.java:421) at org.jboss.deployment.scanner.URLDeploymentScanner.scan(URLDeploymentScanner.java:634) at org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.doScan(AbstractDeploymentScanner.java:263) at org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.loop(AbstractDeploymentScanner.java:274) at org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.run(AbstractDeploymentScanner.java:225) Caused by: javax.naming.NameAlreadyBoundException at org.jnp.server.NamingServer.bind(NamingServer.java:144) at org.jnp.server.NamingServer.bind(NamingServer.java:109) at org.jnp.interfaces.NamingContext.bind(NamingContext.java:591) at org.jnp.interfaces.NamingContext.bind(NamingContext.java:552) at org.jboss.util.naming.Util.bind(Util.java:102) at org.jboss.util.naming.Util.bind(Util.java:89) at org.jboss.deployment.ClientDeployer.setupEnvironment(ClientDeployer.java:312) at org.jboss.deployment.ClientDeployer.start(ClientDeployer.java:171) ... 22 more I'm not clear why it comes. Can anybody help me? Thanks in advance, Leela.