HttpContext.Current.User.Identity.Name is null

Question

I'm trying to use HttpContext.Current.User.Identity.Name to get the user's Windows login details from the internal network, however it's empty.

I've tried changing the authentication mode in Web.Config with no joy:

  <system.web>
    <authentication mode="Windows" />
    <compilation debug="true" targetFramework="4.5" />
    <httpRuntime targetFramework="4.5" />
  </system.web>

I've also heard that in the project properties you should enable Windows authentication and disable anonymous authentication like so:

But then I get a re-direct loop, with the message "This webpage has a redirect loop" in Chrome.

I've also checked that Windows Authentication is installed on my machine:

Any ideas on how to fix this please?

Many thanks

Answer 1

When I have:

<authentication mode="Windows"/>
<identity impersonate="true/>

in web.config I get the current user with:

string currUser = System.Security.Principal.WindowsIdentity.GetCurrent().Name.ToString();