Windows NT 4.0 is a graphical operating system released by Microsoft Corporation on July 311996. Five versions were released: Workstation, Server, Server Enterprise Edition, Terminal Server Edition and Embedded.
Windows NT 4.0 could support a maximum of DirectX 3.0a, so it was capable of supporting very limited gaming even for its time. Despite Windows NT 4.0 being aimed primarily at businesses, some video game publishers, such as Xplosiv, included compatability checks on the rear cover for the video game being able to run on it.
Windows NT 4.0 received six service packs and one service pack update rollup over its operational life:
Windows NT 4.0 Service Pack 1 (SP1): October 7, 1996
Windows NT 4.0 Service Pack 2 (SP2): April 21, 1997
Windows NT 4.0 Service Pack 3 (SP3): June 9, 1998
Windows NT 4.0 Service Pack 4 (SP4): October 31, 1999
Windows NT 4.0 Service Pack 5 (SP5): December 28, 2000
Windows NT 4.0 Service Pack 6 (SP6): March 30, 2001
Windows NT 4.0 Service Pack 6a (SP6a): October 21, 2002
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