Definition of error pages in WEB-INF ------------------------------------ Key: WFLY-3543 URL: https://issues.jboss.org/browse/WFLY-3543 Project: WildFly Issue Type: Bug Components: Web (Undertow) Affects Versions: 8.0.0.Final, 8.1.0.Final Reporter: Christian Kölle Assignee: Stuart Douglas Fix For: 9.0.0.Alpha1 Under Jboss5-7 it was no problem to do the following in web.xml: <error-page> <error-code>404</error-code> <location>/WEB-INF/errors/dynamic_error.jsp</location> </error-page> <error-page> <error-code>500</error-code> <location>/WEB-INF/errors/staticFatalError.html</location> </error-page> If a generic exception is now thrown from a JSF page the behavior is as follows: 8.0 : stack overflow exceptions in undertow code; a blank white page in browser 8.1 : 404 for the error template itself; white page with small 404 text in top left If the static html and jsp are located outside the WEB-INF everything works normally.