By the way, there is now a third option available for running NWChem on Windows 10 (other than cygwin and mingw), that is
Windows Subsystem for Linux (WSL)
I strongly recommend this option since the installation is no different than any linux install
Yes, I'm already working on this.
However, in any case, this will be only my personal problem solution.
Such a technique can not be recommended for people who work with NWChem in conjunction with my programs.