Also called "Win2K" and "W2K," Windows 2000 was a major upgrade to Windows NT 4, launched in early 2000. Available in one client and three server versions, Windows 2000 added support for Plug and ...

Available in client and server versions, Windows NT included built-in networking and preemptive multitasking. NT was introduced in 1993 as Version 3.1 with the same user interface as Windows 3.1 ...