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Editorial Team
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Asked: 2026-06-05T20:06:09+00:00

I have a problem with a memory leak in a very large ASP.NET application.

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I have a problem with a memory leak in a very large ASP.NET application. After about 24 hours of usage (sometimes a lot more) an OutOfMemory exception is thrown. Therefore I am trying to understand how managed memory works in .NET. When does an ASP.NET application throw an OutOfMemory exception? The server has a lot of RAM and there is always plenty of memory left when an OutOfMemory exception is thrown. I understand the difference between virtual memory and physical memory. How much memory does the W3WP process have to consume before an OutOfMemory exception is thrown? Is there a setting somewhere e.g. in the Machine.Config file? The ASP.NET process is never recycled.

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  1. Editorial Team

    In addition to my comment above: Check your main resource usages and at the end of use make sure you use .Dispose() to release it.

    For the memory usage go to the IIS manager, open the tree and navigate to your application pools. Edit advanced properties from the pool your website use and check/set the settings there.

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