I assume that each portlet is being deployed in its own WAR file and that the library JARs required by the portlets are in their WEB-INF/lib directory. As you guesses, such JARs cannot be shared between WARs, as that would be against the spec. Here are a couple of solutions: 1) Places you WARs in an EAR and move the library JARs out of WEB-INF/lib and itn othe EAR (but leave the servlet/portlet JAR, if any, in WEB-INF/lib). 2) Move the library JARs out of WEB-INF/lib and place them into server/xxx/lib. I would go with option #1. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4179852#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...