Windows NT 4.0 build 1227

4.0.1227.1
Build of Windows NT 4.0
Screenshot
OS familyWindows NT
Version number4.0
Build number1227
Build revision1
Architecturex86
Compiled on1996-01-20
SKUs
Workstation
Server
About dialog
WindowsNT4-4.0.1227-About.png
TCB.png TCBGallery.png

Windows NT 4.0 build 1227 is a beta 1 build of Windows NT 4.0.

The CMPXCHG8B detecting issues first appeared in this build which will let system crash (and triple fault machine in many machines) when processor supports CMPXCHG8B which vendor id not GenuineIntel, AuthenticAMD or CyrixInstead and/or processor maximum CPUID leaf higher than 3, vendor id limit removed around Windows NT 4.0 SP4 and Windows 2000 build 1627, and whole detecting issue finally fixed around Windows NT 4.0 SP6 and Windows 2000 build 2091

NFO file[edit | edit source]

NFO contents

Changes[edit | edit source]

  • This build updates the copyright date on the winnt wallpapers and winver from 1995 to 1996.
  • This is the first build where WELCOME.EXE starts at first boot.
  • Pinball has been added.
  • In the Appearances tab of Display Properties, the windows in the preview no longer show icons in their titlebar.

File differences[edit | edit source]

The following files have been introduced or removed compared to build 1175 Server:

Gallery[edit | edit source]