title: Application Pool Goes Down Very Often and Needs Recycling
body: <p>I have a C# <strong>ASP.NET MVC application</strong> <em>(MVC V.4 &amp; .NET Framework 4.5)</em><br> running on a <code>Windows Server 2008 R2 S.P.1 Datacenter</code> as an <strong>application pool</strong> and in the last month has started going down every 3 days and the pool needs <strong>recycling</strong> to go up again. <br>A month ago was going down very rarely, like every 4-5 <strong>weeks</strong> and suddenly this has changed. I haven't changed anything on the Server nor any other kind of update. The <strong>C: Disk</strong> is 50% empty.<br><br>The <strong>IIS Server</strong> version is 7.5 and below you can see some details from the Applications Pool:<br>
  <a href="https://i.stack.imgur.com/XXybq.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/XXybq.png" alt="enter image description here"></a></p>
  
  <p>I see something on the application pools that based on my logic seems a little weird, which is the <strong>.NET Framework Version</strong> which is v4.0 but on my project is v4.5. But this was like that even one or two months ago.<br><br> Any idea on what could have caused this sudden change on the frequency of my web-app going down so frequently?</p>