Windows builds By orbitron507 Nov 20, 1983 Windows 1.0 1983-11-20 build Nov 21, 1983 Windows 1.0 "InfoWorld 1983-11-21" build Nov 29, 1983 Windows 1.0 Fall COMDEX build Jan 24, 1984 Windows 1.0 "PC Mag 1984-01-24" build Apr 9, 1984 Windows 1.0 April 1984 build May 29, 1984 Windows 1.0 Development Release 1 Jun 26, 1984 Windows 1.0 Tandy 2000 build #2 Likely DR2. Oct 1, 1984 Windows 1.0 Tandy 2000 build #3 Likely DR3/4. Nov 1, 1984 Windows 1.0 Development Release 5 Jan 31, 1985 Windows 1.0 Alpha Release Apr 1, 1985 Windows 1.0 "Science et Vie Micro" build May 1, 1985 Windows 1.0 "InfoWorld 1985-07-01" build May 8, 1985 Windows 1.0 Beta Release