Unable to add service in WcfTestClient when copy to a different machine

While developing a .Net 4.0 WCF Service on Windows 7 using VS2012 Pro (Update 4) I found I needed to install the Windows 8.0 SDK, not the Windows 7 SDK as one might otherwise assume. (Added this answer to replace my previous comment).

A bit late response, but installing the SDK on the target computer is not needed.

You just need to copy some files and ensure the existence of one registry key.

From local installed VS 2015 (v14.0):

C:\Program Files (x86)\Microsoft Visual Studio 14.0\Common7\IDE\WcfTestClient.exe
C:\Windows\Microsoft.NET\assembly\GAC_MSIL\Microsoft.VisualStudio.VirtualTreeGrid\v4.0_14.0.0.0__b03f5f7f11d50a3a\Microsoft.VisualStudio.VirtualTreeGrid.dll

From local installed Windows SDK (v10):

C:\Program Files (x86)\Microsoft SDKs\Windows\v10.0A\bin\NETFX 4.6 Tools\SvcUtil.exe
C:\Program Files (x86)\Microsoft SDKs\Windows\v10.0A\bin\NETFX 4.6 Tools\SvcConfigEditor*.*

Registry key:

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Microsoft SDKs\NETFXSDK\4.6\WinSDK-NetFx40Tools-x86  (just ensure all keys exists, no content needed)

Full explanation here: https://social.msdn.microsoft.com/Forums/vstudio/en-US/c3c7221c-c06f-4364-887a-fb20f22877be/wcf-test-client-problem?prof=required (the last response, author: Jakub Bereżański)

The WCFTestClient must be run on a computer with the SDK installed. Not only does it look in the registry to find the location of the SDK, but it also runs the svcutil from the SDK to generate the proxy classes to connect at runtime.