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IIS Error 500 ExtensionlessUrlHandler

I’ve recently encountered the following error in my IIS after starting a (previously) working ASP .NET application:
Handler “ExtensionlessUrlHandler-Integrated-4.0” has a bad module “ManagedPipelineHandler” in its module list
(or in German: Der Handler “ExtensionlessUrlHandler-Integrated-4.0” weist das ung├╝ltige Modul “ManagedPipelineHandler” in der Modulliste auf)

The error appeared after a fresh reinstall of Windows. After a lot of googling around for the problem I realized that the installation order of IIS and .NET framework leads to this error (WTF Microsoft).

The solution is to simply re-register ASP .NET in IIS.

c:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_regiis.exe -i
Category: programming
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One Comment

  1. probbox
    Posted April 20, 2017 at 14:56 | Permalink

    Thanx for the solution, you saved my day!

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