title: IIS 10.0 AppPool crashing
body: <p>After a company forced Windows 10 update today, the Application Pool required by a local web application keeps stopping/crashing displaying the message</p>
  
  <blockquote>
    <p>Service Unavailable
    HTTP Error 503. The service is unavailable.</p>
  </blockquote>
  
  <p>I have checked the the below similar posts and followed the solutions provided with no luck.</p>
  
  <p><a href="https://stackoverflow.com/questions/47338226/iis-10-0-apppool-crashing-causing-503-error">#1 - https://stackoverflow.com/questions/47338226/iis-10-0-apppool-crashing-causing-503-error</a></p>
  
  <blockquote>
    <p>For hosting .Net Core applications in IIS, .Net CLR Version of
    application pool should be No Managed Code as shown in below
    screenshot.</p>
  </blockquote>
  
  <p><a href="https://stackoverflow.com/questions/50244861/iis-10-app-pool-keeps-stopping-due-to-aspnetcore-dll-failed-to-load">#2 - https://stackoverflow.com/questions/50244861/iis-10-app-pool-keeps-stopping-due-to-aspnetcore-dll-failed-to-load</a></p>
  
  <blockquote>
    <p>Go to the drive your IIS is installed on, eg. C:\inetpub\temp\appPools\
    Delete the directory (or virtual directory) with the same name as your app pool.
    Recycle/Start your app pool again.</p>
  </blockquote>
  
  <p>I have also followed the Microsoft instructions.  Made sure to first follow the steps in  "Turn Windows features on/off) and then installing the ASP.NET Core hosting bundle as instructed.  </p>
  
  <p><a href="https://docs.microsoft.com/en-us/aspnet/core/host-and-deploy/iis/?view=aspnetcore-2.1&amp;tabs=aspnetcore2x" rel="nofollow noreferrer">#3 - https://docs.microsoft.com/en-us/aspnet/core/host-and-deploy/iis/?view=aspnetcore-2.1&amp;tabs=aspnetcore2x</a></p>
  
  <p>I'm not having any luck.  </p>
  
  <p>Here's my setup App Pool
  <a href="https://i.stack.imgur.com/DZ3xQ.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/DZ3xQ.png" alt="enter image description here"></a></p>
  
  <p>Here's my setup Site
  <a href="https://i.stack.imgur.com/D4FYK.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/D4FYK.png" alt="enter image description here"></a></p>
  
  <p>I've done everything I know.  Does anyone have this same experience and can share a solution?</p>
  
  <p>As always, a big thank you to the experts out there!</p>
  
  <p><strong>UPDATE</strong>: 
  I created a new AppPool with Identity "ApplicationPoolIdentity" setting.  The page will run however I need to connect to a SQL Server instance with my own credentials because we use Windows authentication on most of the pages.  When I create a new AppPool with my credentials it will not stay running.</p>