Hi Thomas, I tried the guessnumberportlet.war and it worked out of the box as you said:) Then I compared my war file against the guessnumberportlet, and the differences I found were: 1. I had a java class which extended the com.sun.faces.portlet.FacesPortlet. I deleted this one. 2. I didn't have anything in my faces-config.xml. Added some navigation rules similar to what I found in the guessnumberportlet. 3. I added a backing bean which I refererred to in faces-config.xml (didn't have a backing bean before, I thought that the java class which extended the FacesPortlet was enough.) When deploying the war file with my new changes it finally worked:) So, to conclude: I'm really not sure which of the steps previously mentioned that actually fixed it, but I have a strong feeling it had something todo with the java class which extended the FacesPortlet. Thanks for all your help Thomas, it was really helpful :) View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4060358#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...