Install any working JSF implementation ( https://docs.jboss.org/author/display/WFLY10/Admin+Guide?_sscc=t#AdminGuide-JSF ), there is currently problem with MyFaces 2.2.X Start EAP 7 Deploy application by which you can determine which JSF implementation was used to render it (Metamer or hello-jsf-version ) Access application and note which version is used as default Change default-jsf-impl-slot to name of slot of newly installed JSF implementation and reload. Access application and note which version is used now Change default-jsf-impl-slot back to main and reload. Access application and note which version is used now - not default!