Index: lams_common/src/java/org/lamsfoundation/lams/web/session/SessionManager.java
===================================================================
diff -u -rec598ca33b2dfc2835e3e464785abe6771191f63 -r555a2b11eba3ee4922c536eb4a21b8a0406b43d5
--- lams_common/src/java/org/lamsfoundation/lams/web/session/SessionManager.java	(.../SessionManager.java)	(revision ec598ca33b2dfc2835e3e464785abe6771191f63)
+++ lams_common/src/java/org/lamsfoundation/lams/web/session/SessionManager.java	(.../SessionManager.java)	(revision 555a2b11eba3ee4922c536eb4a21b8a0406b43d5)
@@ -77,7 +77,7 @@
     /**
      * Stores session in current thread and mapping so other modules can refer to it.
      */
-    public static void startSession(HttpServletRequest request) {
+    public static HttpSession startSession(HttpServletRequest request) {
 	HttpSession session = request.getSession();
 
 	String sessionId = session.getId();
@@ -100,6 +100,8 @@
 	    }
 	    loginMapping.put(login, session);
 	}
+
+	return session;
     }
 
     /**
Index: lams_common/src/java/org/lamsfoundation/lams/web/session/SystemSessionFilter.java
===================================================================
diff -u -rf4d538fe4dbd4575c45b6fc3f203ea0bde22efa4 -r555a2b11eba3ee4922c536eb4a21b8a0406b43d5
--- lams_common/src/java/org/lamsfoundation/lams/web/session/SystemSessionFilter.java	(.../SystemSessionFilter.java)	(revision f4d538fe4dbd4575c45b6fc3f203ea0bde22efa4)
+++ lams_common/src/java/org/lamsfoundation/lams/web/session/SystemSessionFilter.java	(.../SystemSessionFilter.java)	(revision 555a2b11eba3ee4922c536eb4a21b8a0406b43d5)
@@ -33,14 +33,19 @@
 import javax.servlet.ServletResponse;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
+import javax.servlet.http.HttpSession;
 
+import org.apache.log4j.Logger;
+import org.springframework.web.util.NestedServletException;
+
 /**
  * This filter must set before <code>org.lamsfoundation.lams.web.filter.LocaleFilter</code> in web.xml
  * because LocaleFilter need get value from SystemSession.
  *
  * @author Steve.Ni
  */
 public class SystemSessionFilter implements Filter {
+    private static Logger log = Logger.getLogger(SystemSessionFilter.class.getName());
 
     private static final String CONTEXT_ERROR_PAGE = "/error.jsp";
 
@@ -65,10 +70,23 @@
 	    return;
 	}
 
-	SessionManager.startSession(httpRequest);
+	HttpSession session = SessionManager.startSession(httpRequest);
 	// do following part of chain
-	chain.doFilter(request, response);
-	SessionManager.endSession();
+	try {
+	    chain.doFilter(request, response);
+	} catch (NestedServletException e) {
+	    if (e.getCause() instanceof IllegalStateException) {
+		// There seems to be a problem with Infinispan session invalidation.
+		// Until we upgrade WildFly we need to keep these safety measures.
+		String sessionId = session.getId();
+		log.warn("Session " + sessionId + " was already invalidated");
+		SessionManager.removeSessionByID(sessionId, false, true);
+	    } else {
+		throw e;
+	    }
+	} finally {
+	    SessionManager.endSession();
+	}
     }
 
     @Override