Suggest you try the forums more focused on the web tier: http://www.jboss.org/index.html?module=bb&op=viewforum&f=50 JBoss Web includes the session id in the URL until it gets a response back from the browser that includes a session cookie. It's that first session cookie that lets the webserver know that cookies are supported. I suspect the thing to focus on is why you are getting the "Internal Server Error", not the session id in the URL. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4225115#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...