WCF Activation for IIS

When I try to serve a WCF service on IIS in a Windows 8 machine, I get the well known error

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.

The old work around was to run aspnet_regiis -i but this command seems to have been deprecated in Windows 8 yielding response This option is not supported on this version of the operating system. (...).

C:\> DISM /Online /Enable-Feature /all /FeatureName:WCF-HTTP-Activation
C:\> DISM /Online /Enable-Feature /all /FeatureName:WCF-HTTP-Activation45