Hi, thanks for your reply. Actually I downloaded jboss-4.2.3.GA with jdk6. But I am using jdk1.5. I thought that may be the reason.So I downloaded jboss-4.2.3.GA.zip without jdk6. Now it is working. I have two doubts. If the port already using error, how do we solve that port error? because I am using 8080. how it is related to 1099 ? But as you suggested to use netstat -ab, where do we use that parameter? thanks Bhanu lakshmi. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4167245#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...