AJAX :: Throw Exception Message "Authentication Failed" When Call Webservice Form Javascript

Aug 16, 2010

I was created webservice which has a Method:


Then, in my aspx page, i call that method in javascript, but i get a Exception message is "Authentication Failed", code below:


How to resolve this problem?

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Ajax - Call An ASMX Webservice In Javascript Without Resetting Authentication Timers

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Pinging back to a webservice in ajax from the client keeps the user's session alive, I don't want this to happen. More extensive summary For a website we're developing, we need the client to ping back (in js) to a webservice (ASMX) on the server (IIS7.5). This happens to let the server know that the user is still on the site, and hasn't browsed away to another site. This is as our customer wants to let users lock records, but if they browse away to other sites, then let other people take over those locked records. Perhaps the distinction between the client being on the site but inactive and on another site seems unimportant, but that's kinda irrelevant, I don't get to write the UI spec, I just have to make it work.

My problem is this, the ping stops the user from being timed out on the server through the standard forms authentication timeout mechanism. Not surprising as there is that 30 second ping in the background keeping the session alive. Even though we want to know if the user is still on the site, we want the normal forms authentication timeout mechanism to be honoured. I thought I might be able to fix this by removing the ASP.NET_SessionId and .ASPXAUTH cookies in the XMLHttpRequest that is the server ping, but I can't figure out how to do this. This is how my web service & method are defined:

[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
public class PingWS : WebService
public void SessionActive(string sessionID)
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This is how I'm calling it in js (request is over HTTPS, :
type: "POST",
url: "PingWS.asmx/SessionActive",
data: 'sessionID=' + aspSessionID + '}',
beforeSend: function (xhr) {
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I was trying with the setRequestHeader, but that just appends to the header rather than overwrites the header, and IIS is happy to ignore that junk I added. I'm thinking maybe I should be trying to do this at the server end, someone take PingWS.asmx out of the loop so that it doesn't keep the session active, but I'm not sure how to do this. Although the title of the question is focused on clearing the cookie in the header, I'd be super happy if anyone points out that I'm being really stupid and there is actually a much better way of trying to do what I'm doing.

I'm thinking at this stage maybe I need to add something to the webmethod that says how long this particular page has been inactive, and use that knowledge to timeout manually. That actually sounds pretty easy, so I think I'll do that for now. I'm still convinced that there must be an easy way to do what I originally wanted to do though. Update I'm thinking I'm pretty screwed in terms of cookie manipulation here as both the .ASPXAUTH and ASP.NETSessionId cookie are HttpOnly, which means the browser takes them out of your hands, you can't access them via the document.cookies object. So I would say that leaves me with:

Updating my SessionAlive webmethod to track each request so I can tell how long the user has been sitting idle on a page and timeout if needs be Marking the .asmx page somehow on the server end so that it's taken out of the normal authentication/session tracking flow I know how to do 1. so I'll start there but 2. seems much cleaner to me.

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Configuration : Windows Vista,VS 2005,Ajax v1.0.61025 My Html Page

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>Untitled Page</title>
<script language="javascript" type="text/javascript">
function fnCall()
var ans= Sim.Service.HelloWorld(OnMethodSucceeded, OnMethodFailed);
function OnMethodSucceeded(result)
function OnMethodFailed(result)
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server" ><Services>
<asp:ServiceReference Path="http://localhost/ajaxtest/service.asmx" /></Services>
<div><input id="Button1" type="button" value="button" onclick="fnCall();" /></div>
Web Service CS.
using System;
using System.Web;
using System.Web.Services;
using System.Web.Services.Protocols;
using System.Web.Script.Services;
namespace Sim
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
// To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line.
public class Service : System.Web.Services.WebService
public Service()
//Uncomment the following line if using designed components
public string HelloWorld()
return "Hello World";

But i am getting Sim is not defined. Error. post ur comments. I have reviewed most of the forums. I am not able to clear

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The web service looks like:


The page source is:


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I've made a for a web app to use sql server session state, in the event viewer I get a re-occuring informatation message:

Event code: 4005

Event message: Forms authentication failed for the request. Reason: The ticket supplied has expired.

Event time: 17/08/2010 10:37:01
Event time (UTC): 17/08/2010 09:37:01
Event ID: 623a3b87c23541b9b8b49d9a9a167bde
Event sequence: 7699
Event occurrence: 124
Event detail code: 50202

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Process name: w3wp.exe

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its go to rollback

running = false;
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