This is servlet code I used to reproduce it: package org.jboss.qa.management.web.resources; import java.io.IOException; import java.io.PrintWriter; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpSession; /** * Created by rhatlapa on 10/14/14. */ @WebServlet(name= "SessionTimeoutCheck" , urlPatterns={ "/SessionTimeoutCheck" }) public class SessionTimeoutCheckServlet extends HttpServlet { @Override protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { HttpSession session = request.getSession(); response.setContentType( "text/html" ); PrintWriter out = response.getWriter(); out.write( "Current session ID: " + session.getId()); out.write( "<br />\n" ); out.write( "Requested session ID " + request.getRequestedSessionId()); out.write( "<br />\n" ); if (request.getRequestedSessionId() != null ) { if (request.isRequestedSessionIdValid()) { out.write( "Valid session" ); } else { out.write( "Session expired" ); } } else { out.write( "No sessionId specified => new session" ); } } } Then set session timetout to minimum value: /subsystem=undertow/servlet-container= default :write-attribute(name= default -session-timeout,value=1) reload Try various requests on: localhost:8080/[warname]/SessionTimeoutCheck to see that even when session has expired the "Valid session" text appears on the page.