There’s probably some old NT boxes running stuff somewhere.
I remember V1.0, I miss old WIN95, DOS or Bust!
LOL! I still have manuals for Windows 3.0 and 3.1. in my library.
Apparently some still run OS/2
Windows 1.0 was packaged with the first Aldus Pagemaker. I still have the install disketts and box. Crashed alot. but we werre able to publish a newsletter using it. Nice Placeholder layout that you could just update by overlaying the placeholder file.