Microsoft KB Archive/242096

= Cannot Run Sysedit.exe =

Article ID: 242096

Article Last Modified on 11/1/2006

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APPLIES TO


 * Microsoft Windows NT Server 4.0 Standard Edition

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This article was previously published under Q242096



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:

  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  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. 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. Restart the computer.

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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

Additional query words: 16-bit ntvdm wow system

Keywords: kbprb KB242096

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