Where can i see that the Application Pool is down
<p>I'm using IIS 8 and got 404 error. after investigation, i found that the corresponded application pool was stopped (it was never started). at the moment i started it everything works good.</p>

<p>i couldn't find any information about that on the event log (IIS log about it only when the application pool crash and not if it never started in the first place) and couldn't see any information about it as part of the site log or as part of the "FailedReqLogFiles".</p>

<p>I'm wondering, how could i noticed that the problem is the application pool state without checking it specifically.</p>