// add this to webconfig
<location path="yourdomain.com" allowOverride="true">
<system.web>
<trust level="Full" originUrl=""/>
</system.web>
</location>
http://localhost:5978/
session id > uptlhwsjdncgnlgk4kspwn3g
iframe creating two SessionID mvc4
?AspxAutoDetectCookieSupport=1
HttpContext.Current.User