title: SessionState Timeout
body: <p>I have this setting in the web.config file: <code>&lt;sessionState timeout="540" /&gt;</code>. This tries to make all the sessions expires after 8 hours. However, the session expires much faster than that and I got an object reference not set to an instance of an object error. Could some tell me if there is something else affects the session?</p>
  
  <p>Thanks in advance! </p>