title: I am getting "Object reference not set to an instance of an object."
body: <p>I am getting the <code>Object reference not set to an instance of an object.</code> error frequently even if I have tried increasing <code>Session Timeout = 1440</code> in the <code>web.config</code> file.</p>
  
  <p>This happens on the <code>Session["company_id"]</code> because I am using this session again and again in most of the pages.</p>
  
  <p>I know that the Session["company_id"] is getting expired but Is there a way to increase the time of expiration..?</p>