Sets the identity of the user for an ASP.NET application when Windows authentication is enabled. This class cannot be inherited.
Assembly: System.Web (in System.Web.dll)
When the authentication Mode is set to Windows, the sets the User property of the current HttpContext to an IPrincipal object that represents the Windows identity supplied by IIS for the current request. If IIS uses anonymous authentication, then the uses the identity returned by the GetAnonymous method.
The exposes an Authenticate event that enables you to provide a custom IPrincipal object for the User property of the current HttpContext. The Authenticate event is accessed by specifying a subroutine named WindowsAuthentication_OnAuthenticate in the Global.asax file for your ASP.NET application.
In IIS 7.0, using the class with the FormsAuthenticationModule class is not supported. For more information about compatibility issues in Integrated mode, see Upgrading ASP.NET Applications to IIS 7.0: Differences between IIS 7.0 Integrated Mode and Classic mode.
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.