title: ASP.NET - Session variables null after a minute
body: <p>I have an asp.net website running on IIS server 8.</p>
  
  <p>My Session variables are set to null after a minute of idle time (consistently), following which I get unhandled exceptions. However, if I keep navigating and doing something everything works fine.</p>
  
  <p>In my web.config file the sessionstate mode is SQLServer and timeout is 20 (mins). I think even by default the timeout is 20 minutes, so for this to happen within a minute really baffles me. </p>
  
  <p>I don't understand what other thing could make the session variables lose their values?
  Any pointers? Thanks</p>