I have updated my INTEL software to the latest version ("Intel System Studio 2018 Update 2 Ultimate Edition for Windows". As a result of this update, I've immediately lost the Fortran compiler in VS.
Until this update, it worked perfectly. The C++ support is present.
I think it somehow lost integration. Am getting the error message, however the integration files are in the correct folders:
Intel System Studio and Intel Parallel Studio are two substantially different products that are often confused for each other (just as IA64 and Intel64 are confused for each other). System Studio is for cross-development for Things and embedded devices; it does not provide a Fortran compiler. The package that you want is one of the shades of Parallel Studio.
In Tools > Intel Compilers and Tools > Visual Fortran > Compilers, x64 tab, click on the ... next to Executables. Copy all the text shown and paste it into a reply here. It should look something like this:
$(VSInstallDir)VC\Tools\MSVC\$(VCToolsVersion)\bin\HostX64\x64 $(UniversalCRTSdkDir)bin\$(UCRTVersion)\x64 $(UniversalCRTSdkDir)bin\x64 $(IFortInstallDir)bin\Intel64 $(VSInstallDir)Common7\ide $(VSInstallDir)Common7\Tools $(FrameworkDir)$(FrameworkVersion) $(WindowsSdkDir)bin\x64 $(PATH)
What does yours have?