HttpContext.Current.Request.IsAuthenticated =false for IISExpress - VS2013

Hi,
I have installed VS2013 and upgraded the web application.
But HttpContext.Current.Request.IsAuthenticated  value is getting as false.
I have modified "applicationhost" from the "C:\Users\UserName\Documents\IISExpress\config".
<sectionGroup name="security"> <section name="access" overrideModeDefault="Deny" /> <section name="applicationDependencies" overrideModeDefault="Deny" /> <sectionGroup name="authentication"> <section name="anonymousAuthentication" overrideModeDefault="Allow" /> <section name="basicAuthentication" overrideModeDefault="Deny" /> <section name="clientCertificateMappingAuthentication" overrideModeDefa ...