Quartz jobs not firing after IIS app pool recycle in ASP.NET Core MVC even with AlwaysRunning and preload enabled

Question

I have an ASP.NET Core MVC project that uses Quartz.NET to run background jobs.

Problem: I have configured the IIS application pool for this app with:

StartMode = AlwaysRunning
Idle Timeout = 0 (disabled)
Preload Enabled = true (Application level)

Despite this configuration, when the application pool recycles, the Quartz jobs are not scheduled. The jobs only start after the application receives an HTTP request to any controller.

I want the Quartz scheduler to start immediately after the application pool recycles, without waiting for an HTTP request.

In general, you are against the design of IIS, docs.lextudio.com/blog/… — Lex Li
– Lex Li, Commented 2 days ago

Jessyジェシー · Accepted Answer · 2025-11-28 14:58:27Z

-1

using Quartz;

var builder = WebApplication.CreateBuilder(args);
// Add Quartz services
builder.Services.AddQuartz(q =>
{
// Register your job and trigger
    var jobKey = new JobKey("SampleJob");
    q.AddJob<SampleJob>(opts => opts.WithIdentity(jobKey));
    q.AddTrigger(opts => opts
        .ForJob(jobKey)
        .WithIdentity("SampleJob-trigger")
        .WithSimpleSchedule(x => x.WithIntervalInSeconds(60).RepeatForever()));
});
// Ensure Quartz starts with the app
builder.Services.AddQuartzServer(options =>
{
    options.WaitForJobsToComplete = true;
});
builder.Services.AddControllersWithViews();

var app = builder.Build();
app.UseStaticFiles();
app.UseRouting();
app.UseAuthorization();

app.MapDefaultControllerRoute();
app.Run();

answered 2 days ago

Jessyジェシー

12 bronze badges

New contributor

Sign up to request clarification or add additional context in comments.

1 Comment

Community 2 days ago

Your answer could be improved with additional supporting information. Please edit to add further details, such as citations or documentation, so that others can confirm that your answer is correct. You can find more information on how to write good answers in the help center.

Collectives™ on Stack Overflow

Quartz jobs not firing after IIS app pool recycle in ASP.NET Core MVC even with AlwaysRunning and preload enabled

1 Answer 1

1 Comment

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Related