Unknown Tag Lib: http://xmlns.jcp.org/ MyEclipse IDE > Java EE Development (EJB, JSP, Struts, XDoclet, etc.) This topic has 2 replies, 2 voices, and was last updated 8 years, 3 months ago by support-swapna. Viewing 3 posts - 1 through 3 (of 3 total) Author Posts September 11, 2016 at 6:21 am #496561 Reply schönberg-sol. GmbHParticipant Since JSF 2.2 new namespaces are used http://xmlns.jcp.org/jsf/ instead of http://java.sun.com/jsf/ The editor for xhtml pages dows not recognize these namespaces. Is there a solution for this? September 11, 2016 at 6:45 am #496562 Reply schönberg-sol. GmbHParticipant My fault. In JSF Facets Mojarra 2.2.4 was not registered as Lib. After that the tag libs are recognized. Expect: A composite component in an external jar-file (other project that is also deployed). September 12, 2016 at 4:26 am #496628 Reply support-swapnaModerator schoenberg, Glad that you resolved it. Thank you for getting back to us. Expect: A composite component in an external jar-file (other project that is also deployed). I am not sure about the above line. If you are still seeing issues, please give us more details to help us investigate further. –Swapna MyEclipse Support Author Posts Viewing 3 posts - 1 through 3 (of 3 total) Reply To: Unknown Tag Lib: http://xmlns.jcp.org/ You must be logged in to post in the forum log in