title: Cannot Display Page error in several browser with a live IIS6
body: <p>I developed an ASP.NET page (.NET 2.0) and it works as a charm in the development environment. It is using AJAX.ASP.NET and only the shipped controls (no third-party controls).</p>
  
  <p>I published it to a live IIS6 web server, created the website, set up the .NET version, the application pool and the site can run scripts. I also unchecked anonymous access and checked windows authentication.</p>
  
  <p>Something is either missing or wrongly set up, because my users get "Cannot Display Page" error in different browsers on different places. By different places I mean that when they try to turn the page on a grid they got this error; when they click on a button to submit a search; when they submit something else...</p>
  
  <p>But cannot see a pattern, sometimes it happens, sometimes not. Sometimes with one function sometimes with another. Sometimes with one user sometimes with another.</p>
  
  <p>The users are using IE6, IE7, Firefox, Mozilla and Chrome, so I don't think it is client-related. I tried to create another website and put it there, but I got the same symptoms.</p>
  
  <p>I don't have a possibility to try it on another IIS, so basically I'm stuck.</p>
  
  <p><strong>Some more details:</strong> I'm sure it is somehow connected to IIS, because the network has no problem and it is happening on more than one website now.</p>
  
  <p>There is something wrong with the windows authentication, because the IIS log shows lines like these:</p>
  
  <pre><code>2009-04-29 12:33:17 GET /fakk/OsszLapok.aspx id=1 - 192.168.120.3 401 2 2148074254
  2009-04-29 12:33:19 GET /fakk/OsszLapok.aspx id=1 mydomain\username 192.168.120.3 200 0 0
  </code></pre>
  
  <p>So the first call is coming without the windows user and shows 401, while the second (only after 2 seconds) is coming with user information and it works.</p>
  
  <p>I have plenty of these in the log, even in the same second:</p>
  
  <pre><code>2009-04-29 12:29:21 GET /fakk/Images/rovat_title_eft.png - 192.168.120.3 401 2 2148074254
  2009-04-29 12:29:21 GET /fakk/Images/footer_up.png - 192.168.120.3 401 2 2148074254
  2009-04-29 12:29:21 GET /fakk/Images/rovat_title_eft.png - mydomain\username 192.168.120.3 200 0 0
  2009-04-29 12:29:21 GET /fakk/Images/footer_up.png - mydomain\username 192.168.120.3 200 0 0
  </code></pre>
  
  <p>The webpage is set up to use windows authentication, anonymous access is denied.</p>