Windows NT 4.0 ○›｜_append｜___｜20261013192254-01-•

Windows NT 4.0	…
Version of the Windows NT operating system	…
Screenshot of Windows NT 4.0, showing the Start menu and Windows Explorer	…
Developer	Microsoft
Working state	No longer supported
Source model	Closed source
Released to manufacturing	July 31, 19961
General availability	August 24, 1996 (Workstation) September 1996 (Server)2
Final release	Service Pack 6a with Post SP6a Security Rollup (4.0.1381.7097) / July 26, 20013
Marketing target	Business and Server
Supported platforms	IA-32, Alpha,4 MIPS, PowerPC
Kernel type	Hybrid
Userland	Windows API, NTVDM, OS/2 1.x, POSIX.1, SFU (SP3+)
License	Commercial proprietary software
Preceded by	Windows NT 3.51 (1995)
Succeeded by	Windows 2000 (1999)
Official website	Windows NT 4.0 (archived at Wayback Machine)
Support status	…
Embedded	Mainstream support ended on June 30, 2003.5 Extended support ended on July 11, 2006.5
Server	Mainstream support ended on December 31, 2002.6 Extended support ended on December 31, 2004.6
Workstation	Mainstream support ended on June 30, 2002.7 Extended support ended on June 30, 2004.7
Extended Security Updates (ESU) Support	All editions were eligible for a paid Extended Security Updates (ESU) program. It allowed users to purchase security updates on a pay-per-incident plan. Security updates were available until December 31, 2006.8

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Footnotes

1. “Microsoft Announces the Release of Windows NT Workstation 4.0”. News Center. Redmond, WA: Microsoft. July 31, 1996. Archived from the original on August 5, 2019. Retrieved June 25, 2017. ↩

2. “Microsoft sets support cutoff dates for Windows NT Server 4.0”. Computerworld. December 10, 2001. Retrieved August 24, 2023. ↩

3. “Post-Windows NT 4.0 Service Pack 6a Security Rollup Package (SRP)”. Support. Microsoft. June 19, 2014. Archived from the original on June 28, 2017. Retrieved June 25, 2017. ↩

4. DEC Alpha is supported in Windows NT 4.0 in 32-bit versions only, using a 32-bit application binary interface on an otherwise native 64-bit platform. No versions of Windows NT for the 64-bit Alpha (AXP64) platform were available to the public; they were only developed internally by Microsoft and mainly served as testing grounds for the 64-bit Itanium (IA-64) platform when no other Itanium hardware was available and was still in development.${}^{[4]}$ ↩

5. “Microsoft Support Lifecycle for Windows NT Embedded 4.0”. Microsoft. Archived from the original on February 3, 2015. Retrieved February 3, 2015. ↩ ↩²

6. “Microsoft Support Lifecycle for Windows NT 4.0 Server”. Microsoft. Archived from the original on February 4, 2020. Retrieved September 4, 2009. ↩ ↩²

7. “Microsoft Support Lifecycle for Windows NT 4.0 Workstation”. Microsoft. Archived from the original on February 4, 2020. Retrieved September 4, 2009. ↩ ↩²

8. Brandl, Dennis (December 1, 2006). “Goodbye Windows NT”. Archived from the original on July 16, 2021. Retrieved October 21, 2020. ↩