Jboss IDE(2.0) labels wrong for Twiddles and Stop, which means Label Twiddles is for Stop and label Stop is for Twiddles. Here is my Jboss launch configuration file for the Jboss server 4.0.5.GA using Jboss IDE 2.0(eclipse 3.2), which works well. Start args: --configuration=default --host=localhost Twiddles args:(it is for Stop command. it is labeled wrong) -S -u admin -p admin Stop args:(it is for Twiddles args. It is labeled wrong) -s localhost:1099 -a jmx/rmi/RMIAdaptor BTW, you should change Stop arguments, userName("admin" in my case) and password("admin" in my case) to fit your configurature, should like this -S -u yourUserName -p yourPassword Good luck! View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4019438#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...