Hello, And, It seems you need ejb3 but you have installed ejb3-clustering configuration from jems. 1. Try to select ejb3 server configuration then install it using jems installer jar and not the ejb3-clustering(unless you need ejb3 - clustering server configuration). 2. Now start the jboss server with ejb3 Server configuration. Hope, this may help you. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3986380#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...