Cannot Run Sysedit.exe

This article was previously published under Q242096
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SYMPTOMS
When you attempt to run Sysedit.exe from the command line or from the Run dialog box, nothing may happen.
CAUSE
Sysedit.exe is a 16-bit program. If any of the .dll files listed in the KnownDLLs value in the following registry key are missing or corrupted, the Windows NT Virtual DOS Machine (NTVDM), which is required to run 16-bit programs, does not run properly:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\WOW				
The same problem occurs if the Config.nt or Autoexec.nt file is missing or corrupted, or contains unexpected values.
RESOLUTION
To resolve this issue:

  1. Make sure that all of the .dll files listed in the KnownDLLs value in the following registry key are uncorrupted and present in either the %SystemRoot%\System32 or the %SystemRoot%\System folder:
    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\WOW					
  2. To replace any missing files, copy them from a Windows NT 4.0-based computer that has a properly working NTVDM to the %SystemRoot%\System32 and %SystemRoot%\System folders.

    NOTE: Not all of the .dll files in the list reside in both the System32 folder and the System folder, but many do. It does not harm your computer to have them duplicated in both folders.
  3. If no files are missing, ensure that all the files are uncorrupted by replacing them with the same files from a Windows NT 4.0-based computer that has a properly working NTVDM.
  4. Restart the computer.
MORE INFORMATION
The files listed in the KnownDLLs value include:
Comm.drv
Commdlg.dll
Ctl3dv2.dll
Ddeml.dll
Keyboard.drv
Lanman.drv
Mapi.dll
Mmsystem.dll
Mouse.drv
Netapi.dll
Olecli.dll
Olesvr.dll
Pmspl.dll
Shell.dll
Sound.drv
System.drv
Toolhelp.dll
Vga.drv
Wfwnet.drv
Win87em.dll
Winoldap.mod
Winsock.dll
Winspool.exe
Wowdeb.exe
Timer.drv
Rasapi16.dll
Compobj.dll
Storage.dll
Ole2.dll
Ole2disp.dll
Ole2nls.dll
Typelib.dll
Msvideo.dll
Avifile.dll
Msacm.dll
Mciavi.drv
Mciseq.drv
Mciwave.drv
Progman.exe
Avicap.dll
16-bit ntvdm wow system
Properties

Article ID: 242096 - Last Review: 10/22/2013 00:48:36 - Revision: 1.1

Microsoft Windows NT Server 4.0 Standard Edition

  • kbnosurvey kbarchive kbprb KB242096
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