IIS 7.5 Web Farm and Windows Authentication Issue

Hi,

Windows Authentication is not working properly for my web application.? Below I have given the configuration details.? Any help would be greatly appreciated.

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* My?web application is designed to use windows authentication and allow users access if they belong to a particular AD security group.? In my web.config, I specify this by:

<authorization>

? <allow roles = "domain\group"/>

? <deny users = "?"/>

</authorization>

* My web application resides on a web farm using IIS 7.5.? I am using a AD service account for the application pool.? I have created an SPN for the app pool identity (domain service account).

* I have updated?the ApplicationHost.config file on each of the web farm?servers, located at: C:/Windows/System32/inetsrv/config/ApplicationHost.config, with the following:

<windowsAuthentication enabled="true" useKernelMode="true" useAppPoolCredentials="true" />

* I then enable windows authentication on the root of my website (not IIS root).?

* I put the following into my code to try to help troubleshoot what is happening:? When windows authentication is enabled I get

HttpContext.Current.User.Identity.Name = null

WindowsIdentity.GetCurrent().Name = null

When I disable windows authentication and enable Anonymous I get:

HttpContext.Current.User.Identity.Name = null

WindowsIdentity.GetCurrent().Name = domain\service account (the account that is running the application pool)

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Source: http://forums.iis.net/p/1195148/2040529.aspx/1?IIS+7+5+Web+Farm+and+Windows+Authentication+Issue

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