Seemed to be a no brainer; the WCF service should be enabled using Programs and Features -> Turn Windows features on or off
in the Control Panel. Go to .NET Framework Advanced Services -> WCF Services
and enable HTTP Activation
as described in this blog post on mdsn.
From the command prompt (as admin), you can run:
C:\> DISM /Online /Enable-Feature /FeatureName:WCF-HTTP-Activation
C:\> DISM /Online /Enable-Feature /FeatureName:WCF-HTTP-Activation45
If you get an error then use the below
C:\> DISM /Online /Enable-Feature /all /FeatureName:WCF-HTTP-Activation
C:\> DISM /Online /Enable-Feature /all /FeatureName:WCF-HTTP-Activation45