Seems like this should be a straightforward task, and indeed, I can find lots of posts asking the same thing, with the same answers, but the provided solution doesn't work. That solution is: sudo ...

Microsoft to build an 'Emacs.Net' text editor Developers are puzzling over recent clues blogged by a few Microsoft employees regarding a new "Emacs.Net" tool the company is building.

Microsoft needed a CLI text editor for 64-bit versions of Windows, so it went out and built one. It's not built-in yet, but you can try it out right now.