I am trying to deploy my ASP.NET Core application on IIS, but I’m getting the “CLR worker thread exited unexpectedly” error when accessing the site. I tried following the suggestions given in the question here: https://stackoverflow.com/questions/67312973/asp-net-core-iis-deploy-iis-aspnetcore-module-error-clr-worker-thread-exited-p, but nothing seems to be working.
Here is what I’ve done so far: I installed the ASP.NET Core Hosting Bundle and restarted the server, but still no luck. I even tried increasing the thread count in the application pool settings, but that didn’t work either.
Here is a snippet of my Program.cs file:
public static async Task Main(string[] args)
{
var builder = WebApplication.CreateBuilder(args);
builder.Services.AddControllersWithViews();
var app = builder.Build();
if (app.Environment.IsDevelopment())
{
app.UseDeveloperExceptionPage();
}
else
{
app.UseExceptionHandler("/Home/Error");
app.UseHsts();
}
app.UseHttpsRedirection();
app.UseStaticFiles();
app.UseRouting();
app.UseAuthorization();
app.MapControllerRoute(
name: "default",
pattern: "{controller=Home}/{action=Index}/{id?}");
await app.RunAsync();
}
Can someone please tell me what I’m doing wrong? I’m stumped and don’t know how to proceed.
ASP.NET Core IIS deploy: IIS ASPNetCore Module Error - CLR worker thread exited prematurely (SOLVED)
Hello there, it seems like you are having a problem with deploying your ASP.NET Core application on IIS server and you are encountering a CLR worker thread exited prematurely error. This issue can be caused by a number of different factors, but I’m here to help you out.
First off, make sure that you have installed the .NET Core runtime and hosting bundle on your server. This will ensure that the necessary components for running and hosting ASP.NET Core applications are present on the machine. You can find the download page for the hosting bundle on the official Microsoft website.
Next step is to check your application pool settings. If your application is running in a separate application pool, try changing the identity of the application pool from the default to a specific Windows user account with the necessary permissions. This can be done by going to the Advanced Settings of the application pool and changing the identity under the Process Model section.
Another thing to check is the application settings in your web.config file. Make sure that the “stdoutLogEnabled” attribute is set to “true” and the “stdoutLogFile” is set to a valid path that the application has write access to. This will allow you to capture any errors and diagnostic information that might be causing the worker thread to exit prematurely.
In addition, make sure that your application is properly configured to use the ASP.NET Core Module. This involves setting the “AspNetCoreModule” module in your web.config file and ensuring that the appropriate version of the module is installed on the server. You can check this by going to the list of installed modules in IIS Manager and verifying that the ASP.NET Core Module is present and enabled.
Finally, if none of these solutions work, it might be worth trying to debug the application using the Visual Studio debugger. This will allow you to step through the code and identify any issues that might be causing the CLR worker thread to exit prematurely.
In conclusion, there are several things that could be causing the CLR worker thread to exit prematurely error when deploying your ASP.NET Core application on IIS server. By checking your application pool settings, application settings, module configuration and trying to debug with Visual Studio, you should be able to narrow down the issue and come up with a solution that works for you. Good luck!
Ensure that you have the latest version of the .NET Core SDK and runtime installed on your machine, and try to redeploy the application. Then, check to see if the error message persists. If it does, try to configure your application pool to use the “No Managed Code” option. The CLR worker thread error is usually associated with IIS running the wrong version of the ASP.NET Core module. By selecting “No Managed Code,” you’re telling IIS not to try to run any managed code.
If that doesn’t work, try to verify the application pool’s identity. In some cases, the user identity the application pool is running under can cause problems. You can check this by right-clicking on the application pool and selecting “Advanced Settings.” From there, look for “Identity” and try switching from “ApplicationPoolIdentity” to “NetworkService.”
Lastly, double-check your web.config file settings for your publish profile. Ensure that they match your target environment. This is essential if you’re using features that depend on an app to be hosted via IIS. You can also try modifying your web.config file by adding a “stdoutLogEnabled” configuration key to capture more information on the error message.
Hopefully, this helps resolve your issue with CLR worker thread error.
In order to solve the CLR worker thread issue in your ASP.NET Core application, you can try a couple of different approaches. First, you could try adjusting the settings for the IIS ASP.NET Core Module, such as increasing the idle timeout value or setting the queue length to a higher value. Additionally, you could try monitoring the worker processes for your application and identifying and addressing any issues there.
Another possible solution would be to update your application code to ensure that it is optimized for performance and efficiency. This could include a variety of tactics, such as reducing the amount of data being processed or optimizing algorithms.
In my experience, the best approach to take will depend on the specific details of your application and the underlying hardware and software conditions. However, by taking a proactive approach and making changes as necessary, you should be able to address the CLR worker thread issue and maintain optimal performance for your application.