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Problem

You are trying to access your WCF web service on IIS7 or higher and receive a 404.3 error stating the folowing:

HTTP Error 404.3 - Not Found The page you are requesting cannot be served because of the extension configuration. If the page is a script, add a handler. If the file should be downloaded, add a MIME map.

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Cause

By default IIS7 has no support for WCF. This must be installed seperately.

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Solution

Install WCF support as following:

"%windir%\Microsoft.NET\Framework\v3.0\Windows Communication Foundation\ServiceModelReg.exe" -r -y

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