IIS Process starts but ASP.NET core does not unless I request page

Question

I have an issue with an ASP.NET Core 3.1 web app. I need this app to start automatically when it crashes or server restarts without waiting for the next user to login so that it starts.
For this I set the Application Pool Start Mode to AlwaysRunning, Idle Time-out setting to 0, Regular Time Interval to 0 and on the web site have set the Preload Enabled to True.
That works on all servers that we have except for one server that I can see that the w3wp process starts but not the asp.net core app if I restart the Application Pool or restart the machine. I don't see any errors in the event viewer.

What might be causing this or how can I troubleshoot it further?

Are all servers running exactly the same version of Windows? Maybe one of them is on an older version where the feature ether isn't present, is misconfigured, or has a bug compared to the others? — Martin Costello
– Martin Costello, Commented Feb 4, 2021 at 10:22

Bora Karaca · Accepted Answer · 2022-06-24 15:55:55Z

I have same issue on Windows 10 and IIS version is 10. This solution works for me:

On Windows 7 or later desktop systems when using IIS locally: Navigate to Control Panel > Programs > Programs and Features > Turn Windows features on or off (left side of the screen). Open Internet Information Services > World Wide Web Services > Application Development Features. Select the checkbox for Application Initialization.

Using web.config, add the element with doAppInitAfterRestart set to true to the <system.webServer> elements in the app's web.config file add this section

 <system.webServer>
      <applicationInitialization doAppInitAfterRestart="true" />
 </system.webServer>

After that you must change applicationHost.config two section change C:\Windows\System32\inetsrv\config\applicationHost.config

First section below:

<site name="yoursitename" id="3" serverAutoStart="true">
    <application path="/" applicationPool="yoursitename" preloadEnabled="true" serviceAutoStartEnabled="true" serviceAutoStartProvider="ApplicationPreload">
        <virtualDirectory path="/" physicalPath="C:\websites\yoursitename" />
    </application>
    <bindings>
        <binding protocol="http" bindingInformation="*:8011:" />
    </bindings>
</site>

Second section below:

<add name="yoursitename" autoStart="true" startMode="AlwaysRunning">
    <processModel idleTimeout="00:00:00" />
       <recycling>
        <periodicRestart time="00:00:00" />
    </recycling>
</add>

PS: if you want to stop the project completely you must stop in application pool.

Source: https://learn.microsoft.com/en-us/aspnet/core/host-and-deploy/iis/advanced?view=aspnetcore-6.0#application-initialization-module

Collectives™ on Stack Overflow

IIS Process starts but ASP.NET core does not unless I request page

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related