c# - WindowsIdentity and Classic .Net App Pool

Question

I have a ASP.NET website that requires my App Pool be the Classic .Net App Pool. The site is running on .NET 3.5 on IIS 7. When I try to get the Active Directory User name of the logged in user:

System.Security.Principal.WindowsIdentity.GetCurrent().Name

I get the following:

IIS APPPOOL\Classic .NET AppPool   

However when I set the app pool to .net 4.0 it returns the logged in username (which is what I want). Am I missing a setting?

Answer 1

First of all put this lines inside web.config configuration section:

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

Second go to IIS manager open your web app properties and check following settings for Authentication:

Anonymous Authentication = Disabled, ASP.NET Impersonation = Enabled (this is not realy required), Windows Authentication = Enabled

This settings will give you Active Directory User and also impersonate it.