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Configuring WCF - Error 500.21 Handler svc- bad module ManagedPipelineHandler

Nipun Tomar

15y15.1k0025Blog

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If you see this error you havent installed the prerequistes for ASP.NET 4.

Try This

1. Open Visual Studio Command Prompt
2. Type the following:
aspnet_regiis.exe -i

3. Run the command

4. Try your service again... it should be working :-)

This basically installs the necessary ASP pieces to get your service up and working!