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Editorial Team
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Asked: 2026-05-12T09:36:12+00:00

We’re running a web service as a web site project. Clients make requests which

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We’re running a web service as a web site project. Clients make requests which return after a few seconds, but which spawn a thread that should run for hours. The thread makes web requests and writes to a database, and is throttled with Thread.Sleep calls.

After running for about 20 minutes with several threads running, all the threads receive a ThreadAbortException at the same time. Thread.resetAbort doesn’t help. The exception can occur during a SQL call, during a web request or during a Thread.Sleep.

I thought the problem might be the httpRuntime attribute executionTimeout in web.config, but that didn’t solve the issue.

Any other ideas what might be killing off all our threads?

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1 Answer

  1. Editorial Team

    The application pool in IIS has an idle time-out. It needed to be turned off.

    (Administrative Tools > IIS. Right-click the application pool > properties. Performance tab.)

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