Windows NT came first. NT 4.0 came to manufacturing in 1996, and Win 2000 was released to retail in February of 2000. [Windows 2000 is also known as Windows NT 5.0.]
Microsoft 2000. XP came out following that.
Windows NT is what Windows 2000 is upgraded from.
Windows NT 3.1 only came in two versions, Windows NT 3.1 and Windows NT 3.1 Advanced Server.
As normal Windows. 2000, XP, Vista, and 7 are all technically Windows NT
Incremental: Windows 9x/Me/NT/2000/XP Differential: Windows 98/NT/2000/XP
windows 2000 professional..
it doesnt
•Windows XP is heavily based on the Windows NT and 2000 core. •Default user login identical to XP Home Edition, but can be configured to do domain authentication like NT and 2000 •Administrative shares exist and are accessible in the same manner that they were in NT and 2000. •Windows XP continues the 32-bit programming model that was fully implemented in NT and 2000 -from Sabastian Gomes B'lore
Windows 2000 Server and Windows NT Server 4.0 (SP5).
Windows 2000 was the upgrade path of Windows NT 4, for both the Workstation and Server versions.
Windows NT, Windows 2000, and Windows ME
Windows 95 (partial, via USB add-on) Windows 98 Windows ME Windows NT 3.1 Windows NT 3.5 Windows NT 3.51 Window NT 4 Windows 2000 Windows XP Windows Server 2003 Windows Vista Windows Server 2008