title: Request.ServerVariables("LOGON_USER") VS2010 and VS2012
body: <p>I have encountered with a very peculiar for me thing. I started developing a Web site in Visual Studio 2010 and finished in 2012. It is VB.NET, framework 4.0. Throughout the Web site I use Request.ServerVariables("LOGON_USER"). Everything works as it should.</p>
  
  <p>I recently started developing another Web site using 2012 from the beginning. What happens is Request.ServerVariables("LOGON_USER") does not return any value! It is simply empty! However, if I open this same application with Visual Studio 2010, it works! </p>
  
  <p>Can anyone explain what is going on here and how do I fix it in VS2012? Thank you!</p>