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 is unveiling its own command-line text editor at its Build conference today. Edit on Windows will be accessible by using “edit” in a command prompt, allowing developers to edit files ...

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.