Windows NT 3.1 build 438

3.1.438.1
Build of Windows NT 3.1
3.1.438.1
OS family
Architecturex86, MIPS, Alpha AXP
Compiled1993-04-22
Timebomb
Works in
About
WindowsNT3.1-3.1.438-About.png
SKUs
Workstation
TCB.png TCBGallery.png

Windows NT 3.1 build 438 is the April 1993 beta of Windows NT 3.1. It is not much different from the previous build, which was released a month earlier. A version of the build in the Alpha AXP architecture was shared on 4 August 2020.

This build was mentioned in an internal Microsoft e-mail from August 1993[1] where it states that it was delivered to Novell in order to test their NetWare Client for the then-upcoming NT operating system, highlighting the issue that further recompilations of the aforementioned software had failed to work properly. The e-mail also states that Novell had received the June 1993 beta three weeks later than what was originally promised by Microsoft.

New features and changes[edit | edit source]

  • The Control Panel and Windows NT Setup icons are now updated to match the ones in Windows 3.1.
  • NTLDR has been updated to version 3.1 as seen in the RTM and it no longer shows a list of loaded drivers unless the user adds the /SOS switch to BOOT.INI.
  • When changing the display type in Setup, a warning message will appear, as selecting a display type incompatible with the current installed one will make Windows NT unusable, necessitating reinstallation. Setup recommends to select the proper display type after Windows NT has been fully installed, as the user still has access to the Last Known Good Configuration to recover the previous hardware state.
  • There are more options when selecting the display type, such as support for ATi display adapters, "VESA VGA (800x600, 16 colors)", as well as "S3 (1280x1024, 256 colors)".

File differences[edit | edit source]

The following files have been introduced or removed compared to build 404:

Added files
Name Description Version
AFD.SYS
APPSTART.ANI
CGA40WOA.FON Non-Windows application font for 386 enhanced mode (USA code page 437) 3.10
CGA80WOA.FON Non-Windows application font for 386 enhanced mode (USA code page 437) 3.10
DRIVERS.DLL Control Panel Drivers applet 3.10
DRWATSON.EXE Windows Fault detection utility 3.10
HALFTONE.HLP
LOGON.SCR
MIDIMAP.DLL Control Panel MIDI Mapper Applet 3.10
MSCDEXNT.EXE
MULTIMED.CPL Control Panel Multimedia applet 3.10
MUP.SYS Multiple UNC Provider Driver 3.10
MUSRMGR.IND
NTLMINST.INF
OEMNADLM.INF
OEMNADLT.INF
OEMNADNP.INF
OEMNSVFT.INF
OEMNXPIP.INF
PAX.EXE
PRNSETUP.INF
REPAIR.INF
SNDVOL32.HLP
SOUND.DLL Control Panel Sound 3.10
VCDEX.DLL
VIRTUAL.INF
WFWNET.DRV
Removed files
Name Description Version
CONFIG.SYS
DRIVERS.CPL Control Panel Drivers applet 3.10
FATBOOT.BIN
HPFSBOOT.BIN
KRNL386.MAP
KRNL386.SYM
MCIHWND.EXE
MIDIMAP.CPL Control Panel MIDI Mapper Applet 3.10
NINSTALL.EXE
RESOLVER.DLL Sockets Resolver DLL 3.10
SIMBAD.SYS
SNDBLST.DLL MIDI and wave driver for Sound Blaster 1.5 3.10
SNDBLST.SYS
SOCKUTIL.DLL Sockets Utilities DLL 3.10
SOUND.CPL Control Panel Sound 3.10
SYNTH.DLL Synthsizer driver for Ad Lib and OPL3 3.10
SYNTH.PAT
SYNTH.SYS
SYS08CGA.FNT
SYS08X12.FNT
VIEWER.INI

Gallery[edit | edit source]

References[edit | edit source]