title: What happens if an IIS application worker process hangs?
body: <p>I am totally new in web programming... Now I am working on an already implemented ASP.NET MVC application which is deployed in IIS. This app is bound to an application pool which has only one worker process. At this moment, I am trying to understand what happens if the worker process freezes/hangs due to an uncontrolled exception thrown by app code. So may someone explain me it?</p>
  
  <p>What we have observed is that when this happens, application stops working correctly and we need to restart its application pool in order to app begins to work correctly again. After observing this behavior, I have a doubt..... In application pool advanced configuration, under process model, the ping maximum response time (seconds) is set to 90 so as far as I know, when application pool pings the worker process and it does not respond because it is hang, after 90 seconds then worker process should terminate, but it seems it is not terminating because when this happens we need to restart application pool in order to app works again.... so Why in this case worker process does not terminate?</p>