title: Visual Studio localhost prompting for login
body: <p>I'm using Visual Studio 2005 for a project. When I try to run the project, the browser pops up the login prompt saying Authentication Required. If I hit Ok or Cancel, it goes to the error page saying HTTP Error 401 - Unauthorized. </p>
  
  <p>The weird thing is the same project was working fine till today! There have been no recent web.config changes and I cannot see how any of the recent minor file changes made could cause this.</p>
  
  <p>Any help would be appreciated.</p>