I recently moved all my development boxes to Windows. That’s right, all those Mac machines, with the exception of one that I need for testing, have been Boot Camp-ed to use the latest and greatest of the Windows 10 ecosystem. As part of this process, I started building some automation scripts - I’ve had that for macOS in the form of shell scripts that I could run whenever I re-installed the system, but nothing like that for Windows.
With the release of Windows 10, all photos are now opened by default with the help of the Photos app. I like the Photos app, but I also enjoy the UI of the traditional Windows Photo Viewer.