Hi All, I have problem to lookup RMIAdaptor from the JNDI namespace of Jboss. The code that I have written is follows. import java.util.Properties; import javax.naming.InitialContext; public class ServiceLocator { public static void main(String[] args) { try { Properties enviornment = new Properties(); enviornment.setProperty("java.naming.factory.initial","org.jnp.interfaces.NamingContextFactory"); enviornment.setProperty("java.naming.provider.url","jnp://localhost:1099"); enviornment.setProperty("java.naming.factory.url.pkgs","org.jboss.naming:org.jnp.interfaces"); InitialContext initialContext = new InitialContext(enviornment); initialContext.lookup("jmx/rmi/RMIAdaptor"); } catch(Exception e) { e.printStackTrace(); } } } When I am executing the program I am getting the following exception javax.naming.NamingException: Could not dereference object [Root exception is javax.naming.CommunicationException [Root exception is java.io.InvalidClassException: org.jboss.invocation.InvokerInterceptor; unable to create instance]] at org.jnp.interfaces.NamingContext.resolveLink(NamingContext.java:1067) at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:700) at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:587) at javax.naming.InitialContext.lookup(InitialContext.java:351) at ServiceLocator.main(ServiceLocator.java:17) Caused by: javax.naming.CommunicationException [Root exception is java.io.InvalidClassException: org.jboss.invocation.InvokerInterceptor; unable to create instance] at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:722) at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:587) at javax.naming.InitialContext.lookup(InitialContext.java:351) at org.jnp.interfaces.NamingContext.resolveLink(NamingContext.java:1061) ... 4 more Caused by: java.io.InvalidClassException: org.jboss.invocation.InvokerInterceptor; unable to create instance at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1700) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1299) at java.io.ObjectInputStream.skipCustomData(ObjectInputStream.java:1877) at java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:1765) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1711) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1299) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:339) at org.jboss.proxy.Interceptor.readExternal(Interceptor.java:80) at java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:1753) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1711) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1299) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:339) at org.jboss.proxy.Interceptor.readExternal(Interceptor.java:80) at java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:1753) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1711) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1299) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:339) at org.jboss.proxy.ClientContainer.readExternal(ClientContainer.java:156) at java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:1753) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1711) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1299) at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1912) at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1836) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1713) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1299) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:339) at java.rmi.MarshalledObject.get(MarshalledObject.java:135) at org.jnp.interfaces.MarshalledValuePair.get(MarshalledValuePair.java:72) at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:652) ... 7 more Can anybody help me please? Regards, Gourab Guha View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4088840#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...