If You Receive "IIS HTTP Error 404.3 - Not Found"
If You Receive "IIS HTTP Error 404.3 - Not Found," with the message: "The page you are requesting cannot be served because of the extension configuration."
In Windows:
Open up ‘Programs & Features’
Select ‘Turn Windows features on or off’ (on the left, must be administrator)
Make sure ‘.NET Framework 4.5 Advanced Services’ is selected.
Navigate to ‘.NET Framework 4.5 Advanced Services’ > ‘WCF Services’ & make sure ‘HTTP Activation’ is selected.
Citation of Solution
SEE: Response that starts with "In Windows 8"
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