PROGRAM HELLO WRITE(*,*) 'Hello, World from Fortran 77 on Windows 10 64-bit!' STOP END

Once you have installed, running your legacy code is simple: Save your code as hello.f . Open the Command Prompt in that folder. Type: gfortran hello.f -o hello.exe Run it by typing: hello.exe Common Troubleshooting for Windows 10

Enable WSL2, install Ubuntu, then: