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Asked: 2026-06-03T03:59:40+00:00

I don’t understand why there are two ASP.NET w3wp processes in Task Manager when

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I don’t understand why there are two ASP.NET w3wp processes in Task Manager when I only have one website and one application pool. Why are there two processes running? I have Googled this and looked on MSDN but cannot find an answer.

I am trying to debug a memory leak in an application. I understand the concept of threading and multiple threads living in a process, but I do not understand why there are multiple processes.

I am specifically asking what scenarios can cause more than one process to run.

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1 Answer

  1. Editorial Team

    Look at the Advanced Settings of your application pool for this section, and make sure the indicated value is set to 1:

    IIS Maximum Worker Processes

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