=== modified file 'src/com/goldencode/p2j/main/WebHandler.java'
--- src/com/goldencode/p2j/main/WebHandler.java	2016-01-28 12:40:59 +0000
+++ src/com/goldencode/p2j/main/WebHandler.java	2016-02-05 10:27:09 +0000
@@ -240,7 +240,7 @@
          errorMessage = htmlErrorMessage(webSpawner.getExitCode(), userName);
          
          // return a page having containing error message
-         doGet(target, base, request, response);
+         sendError(errorMessage, base, request, response);
          
          // reset error message
          errorMessage = "";
@@ -293,6 +293,51 @@
    }
    
    /**
+    * Sends the error message to the client.
+    * 
+    * @param    error
+    *           The error message to the client.
+    * @param    base
+    *           The base request.
+    * @param    request
+    *           The http request.
+    * @param    response
+    *           The http response.
+    */
+   private void sendError(
+                      String              error,
+                      Request             base, 
+                      HttpServletRequest  request,
+                      HttpServletResponse response)
+   {
+      response.setContentType(MimeTypes.Type.TEXT_HTML.asString());
+      response.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
+      response.setHeader(HttpHeader.CACHE_CONTROL.asString(), 
+                         "no-cache, no-store, must-revalidate");
+      response.setDateHeader(HttpHeader.EXPIRES.asString(), 0);
+      
+      try
+      {
+         PrintWriter writer = response.getWriter();
+         writer.println(error);
+         writer.flush();
+      }
+      catch (IOException ioe)
+      {
+         LOG.logp(Level.SEVERE,
+                  "WebHandler.sendRedirectPath()",
+                  "",
+                  LogHelper.generate("IOException!"),
+                  ioe);
+      }
+      finally
+      {
+         // mark the request as handled
+         base.setHandled(true);
+      }
+   }
+   
+   /**
     * Process the given string and make any replacements of parameter
     * values as needed. The replacement placeholder follow the JEE 
     * expression language (EL) format for immediate evaluation. 
@@ -332,7 +377,7 @@
     */
    private String htmlErrorMessage(int exitCode, String userName)
    {
-      StringBuilder sb = new StringBuilder("<h1 style=\"color:red\">");
+      StringBuilder sb = new StringBuilder();
 
       if (PlatformHelper.isUnderWindowsFamily())
       {
@@ -386,7 +431,6 @@
          }
       }
       
-      sb.append("</h1>");
       return sb.toString();
    }
 }

=== modified file 'src/com/goldencode/p2j/main/web_client.html'
--- src/com/goldencode/p2j/main/web_client.html	2016-01-28 14:56:08 +0000
+++ src/com/goldencode/p2j/main/web_client.html	2016-02-05 10:25:53 +0000
@@ -42,6 +42,12 @@
                            window.location.assign(httpRequest.responseText);
                         }
                      }
+                     else if (httpRequest.status === 401)
+                     {
+                        var msg = httpRequest.responseText;
+                        var errorNotifier = document.getElementById("error");
+                        errorNotifier.textContent = msg;
+                     }
                   }
                 }
                 catch(ex)
@@ -104,7 +110,9 @@
                </table>
             </form>
          </div>
-         <div align="center" style="margin-top:100px">${error}</div> 
+         <div align="center" style="margin-top:100px">
+            <h1 id="error" style="color:red">${error}</h1>
+         </div> 
       </div>  
    </body>
 </html>