Hello
It looks like you can’t use Geant4 10.6 with Visual Studio 2017. Is that true? If it is then at least there is a mistake in “Installation Guide” where Visual Studio 2017 with compiler version 19.11.25547 is used to make installation. I used the latest available version for Visual Studio 2017 which was 19.16.27034 and it gave me an error:
CMake Error at cmake/Modules/MSVCCompileFeatures.cmake:16 (message):
Geant4 requires MSVC 19.20 (Visual Studio 2019 Version 16.0) or newer