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Asked: 2026-05-12T08:38:14+00:00

I think I heard that ASP.NET applications will shut down after a while of

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I think I heard that ASP.NET applications will shut down after a while of being idle (i.e. no visitors).

Is there a way to prevent this behavior from happening? I have a timer that runs some code from the global.asax.cs application_start event, and want to make sure that it continues to run, even when no visitors are hitting the site.

Thanks in advance!

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  1. Editorial Team

    You can do it a few ways.

    1. If you have control over IIS, you can change the “Idle Timeout” within the application pool, by default it is 20 minutes.
    2. If you do NOT have control over IIS (Shared or other hosting), you can use an external service to ping the site. MyWebKeepAlive or Pingdom are good options for this.

    If you are under option two, I strongly recommend an external source, as it is less to manage, and if you don’t have IIS available to configure, you most likely don’t have the server available to add a ping application to.

    In addition, I do not recommend something that sits in-process with the web application, as I have found that those can cause issues when the application really does need to recycle…

    One last thought

    If you do go the route of modifying the IIS Idle timeout, I do recommend setting a regular recycle of the application pool. As many web applications do benefit from a periodic recycle, and most commonly the idle timeout is the biggest regular recycle factor.

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