One of our customers needs to specifically use Intel Visual FORTRAN 17.0.4 to compile FORTRAN code to be linked to the commercial code ANSYS. Is there a way to specifically download version 17.0.4?
Yes. See https://software.intel.com/en-us/articles/older-version-installation/
However, it is more likely that the old version is not in fact necessary and that the latest version (19.0.3 as I write this) is a better choice.