Asp.net LoginUrl page_load is fired twice
<p>i have a problem with page_load event of my loginUrl page.</p>

<p>To exclude all the other problem i created a pageTest completely empty</p>

<pre><code> &lt;%@ Page Language="C#" AutoEventWireup="true" CodeBehind="TestPage_NoMaster.aspx.cs" Inherits="project.TestPage_NoMaster" %&gt;

&lt;!DOCTYPE html&gt;

&lt;html xmlns="http://www.w3.org/1999/xhtml"&gt;
&lt;head runat="server"&gt;
&lt;title&gt;&lt;/title&gt;
&lt;/head&gt;
&lt;body&gt;
&lt;form id="form1" runat="server"&gt;
&lt;div&gt;

&lt;/div&gt;
&lt;/form&gt;
&lt;/body&gt;
&lt;/html&gt;
</code></pre>

<p>in my web.Config i have this configuration:</p>

<pre><code> &lt;authentication mode="Forms"&gt;
  &lt;forms name="login" loginUrl="~/TestPage_NoMaster.aspx" protection="All" timeout="120" path="/" /&gt;
&lt;/authentication&gt;
</code></pre>

<p>I don't understand why Page_load event is fired twice when the web application starts.</p>

<p>Someone can help me?</p>

<p>back end code:</p>

<pre><code> using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Web;
 using System.Web.UI;
 using System.Web.UI.WebControls;

 namespace project
 {
     public partial class TestPage_NoMaster : System.Web.UI.Page
     {
         protected void Page_Load(object sender, EventArgs e)
         {
             String prova = "Hello :)";
         }
     }
 }
</code></pre>

<p>UPDATE:</p>

<p>**in the intelliTrace i have some exception:
- impossible load file or assembly App_web...filenotfoundException
- System.Globalization.CultureNotFoundException
**</p>