Windows Server 2012 R2: application pool in IIS stops
<p>I have a dedicated server in Aruba, which is Windows Server 2012 R2 and as you can see from here:</p>

<p><a href="https://i.stack.imgur.com/Jq6RW.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Jq6RW.png" alt="enter image description here"></a></p>

<p>I created a simple test web site to see if everything works and the relative application pool starts. Anyway, if I perform </p>

<pre><code> http://94.177.162.33 (the IP address assigned to my server from ARUBA) or
 http://localhost
</code></pre>

<p>I get "Service Unavailable. HTTP Error 503. The service is unavailable." and I see that the relative application pool test has stopped.
Well, I have never worked with Windows server before and I barely know what is IIS but I wouldn't know hot to solve this issue.
what am I missing?</p>

<p>This is wha I have in Event Viewer:
<a href="https://i.stack.imgur.com/6cind.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/6cind.png" alt="enter image description here"></a></p>