c# - windows authentication in asp.net

Question

In Asp.net Application for windows authentication

In aspx page

asp:Label runat="server" ID="windows"  

aspx.cs page

windows.Text = User.Identity.Name;

webconfig:

authentication mode="Windows"

but authentication is not performed what problem ??

Answer 1

Add the following in your web.config under system.web to make sure that the windows authorization is triggered:

<authorization>
    <allow users="?" />
</authorization>