The error message is correct: .NET v4 runtime can be installed on Windows Feature selection screen on Win2016. There's no need to install via dotnetfx40_full_x86_x64.exe.
Alternatively you can use this command to install:
Dism /online /Enable-Feature /FeatureName:NetFx4 /All
Also note that the minimum version of .NET v4 runtime you can install on Win2016 is .NET v4.6. Most programs written for .NET v4.X should be able to run fine on it.