Windows 8.1 Pro 6.3 Build 9374 X86 Lite Free Apr 2026
It sounds like you’re referring to a of Windows 8.1 Pro, specifically build 9374 (which was a leaked pre-release / beta build from early 2013).
*For low- and mid-rise markets needing taller cars, larger entrances, and faster travel speeds, check out the new Schindler 5000. Now available in all markets.