Windows NT 4.0

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Windows NT 4.0
Version of Microsoft Windows
OS familyWindows NT [!]
Preliminary name
Architecturex86, Alpha, MIPS, PC98, PowerPC
Latest build
Release date1996-07-31
Support end2006-07-11

Windows NT 4.0 (codenamed Shell Update Release or Cairo) is the successor to Windows NT 3.51 and the first version of Windows NT to feature the Windows Explorer interface introduced in Windows 95. It is the last version of Windows NT to include NT in its product name. It was succeeded by Windows 2000.

The Windows Desktop Update further enhances the shell by incorporating features from Windows 98.


There are several editions of Windows NT 4:

  • Workstation
  • Server
  • Server Enterprise Edition
  • Terminal Server (Codename: Hydra)

Service Packs

There were 6 service packs released for Windows NT 4. There was a 7th Service Pack Planned, but it was canceled and Update Rollup 6a was released instead.


Pre-Beta 1

Beta 1

Pre-Beta 2

Beta 2

Release Candidate 1

Release Candidate 2


- Almost RTM, but is missing the "dot" on the boot screen.


Service Pack 1

Service Pack 2

Service Pack 3

Service Pack 4

Service Pack 5

Service Pack 6

Service Pack 6a

Post-Service Pack 6a Security Rollup