It’s hard to believe, but Windows 10 has been with us for nearly a decade. Before the dark mode tweaks, before the "Meet Now" icon in the taskbar, and long before Windows 11, there was the original release: Version 1507 (codenamed "Threshold 1").
Introduced virtual desktops and a new interface for switching between open windows. Support & Servicing Status windows 10 version 1507 iso