You try to start up two application servers with the same ports to listen. Example: 1. You start the first server which will listen port number 1234. 2. At the same machine you try to start the second application server which try to listen port number 1234, but this port is busy by the first server. And "java.net.BindException: Address already in use" exception will appear. Solution: 1. Read logs. 2. Change the port number for the second server. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4066235#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...