Windows NT 3.1
Windows NT 3.1 is the first release of Microsoft's Windows NT line of server and business desktop operating
systems, and was released to manufacturing on 27 July 1993. The version number was chosen to match the one
of Windows 3.1, the then-latest operating environment from Microsoft, on
account of the similar visual appearance of the user interface. Two editions of NT 3.1 were made available,
Windows NT 3.1 and Windows NT Advanced Server.