Where can I find WcfTestClient.exe (part of Visual Studio)

The prerequisite to have WcfTestClient is to have Windows Communication Foundation component installed. If WcfTestClient is missing, install it by modifying Visual Studio:

Control Panel > Apps & Features > Visual Studio (your version)

In Visual Studio Installer, click on Modify, choose Individual components tab and then select (see below screenshot):

☑ Windows Communication Foundation

Click on Modify and voilà, application will be on your disk.

If you want to use WcfTestClient with no Visual Studio, see answer(s) on: How can the Wcf Test Client be used without Visual Studio?

VS 2022 Professional:

C:\Program Files\Microsoft Visual Studio\2022\Professional\Common7\IDE\WcfTestClient.exe

VS 2022 Community:

C:\Program Files\Microsoft Visual Studio\2022\Community\Common7\IDE\WcfTestClient.exe

VS 2022 Enterprise:

C:\Program Files\Microsoft Visual Studio\2022\Enterprise\Common7\IDE\WcfTestClient.exe

VS 2019 Professional:

C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\Common7\IDE\WcfTestClient.exe

VS 2019 Community:

C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\Common7\IDE\WcfTestClient.exe

VS 2019 Enterprise:

C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\Common7\IDE\WcfTestClient.exe

VS 2017 Community:

C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\Common7\IDE\WcfTestClient.exe

VS 2017 Professional:

C:\Program Files (x86)\Microsoft Visual Studio\2017\Professional\Common7\IDE\WcfTestClient.exe

VS 2017 Enterprise:

C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\Common7\IDE\WcfTestClient.exe

VS 2015:

C:\Program Files (x86)\Microsoft Visual Studio 14.0\Common7\IDE\WcfTestClient.exe

VS 2013:

C:\Program Files (x86)\Microsoft Visual Studio 12.0\Common7\IDE\WcfTestClient.exe

VS 2012:

C:\Program Files (x86)\Microsoft Visual Studio 11.0\Common7\IDE\WcfTestClient.exe

C:\Program Files (x86)\Microsoft Visual Studio (Your Version Here)\Common7\IDE