I have a ASP.NET application where an employee logs into Windows and then they have to select their name from a long list of names and log in into the application.
W
Try this:-
System.Web.HttpContext.Current.User.Identity.Name
Also check this forum.
UPDATE:-
1) Please check that you have disabled anonymous mode in IIS
2) Also do check that you have set the application to autheticate the user details like this:-
or like this:-
3) You can you can either configure IIS in Control Panel so that your site (or machine) uses Windows authentication and denies anonymous access