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Editorial Team
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Asked: 2026-05-25T01:56:05+00:00

I have setup an ASP.NET MVC3 website using Windows Authentication and am getting a

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I have setup an ASP.NET MVC3 website using Windows Authentication and am getting a 401.1. The error code is 0x8009030e on the 401 page. Users should be able to access the site using their domain credentials.

I don’t get the error if I logon to the machine and hit the website via localhost (http://localhost/mysite). However, even logged onto the server, if I hit the website through the server name (ie http://machinename.com/mysite) I still get the error.

The website uses it’s own .net 4.0 app pool and using integrated mode. The site is configured for Windows Authentication only in the config. 

<authentication mode="Windows" />
<authorization>
  <deny users="?" />
</authorization>

…and in IIS. I don’t have extended properties configured, and have enabled kernel-mode authentication (both are the default). I’ve tried toggling “IIS Manager Permissions” without any luck.

Any ideas?

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1 Answer

  1. Editorial Team

    I had to do two things to get this working properly:

    1. Make the app pool use “Classic” instead of “Integrated” mode. After making, the change I was getting a 403.x error.
    2. I solved the 403.x error by granting (Read/Execute) NTFS permissions to the “Domain Users” group.
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