It is because of multiple jsf jars, one from your application dependencies and one from the container runtime. See this page for full details: FATAL application JSF1029: The specified InjectionProvider implementation 'org.jboss.web.jsf.integration.injection.JBossInjectionProvider' does not implement the InjectionProvider interface. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4212461#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...