I couldnt fnd the reason but I believe the runtume config of Tomcat within JBossIDE is different than that of default tomcat install. (I dont know where it is even after looking in server.xml). The workaround for now is to click on Servers, in the config dialog click on web modules, add "external web module" and give the path to your webapp. This should deploy your webapp View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3991295#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...