Microsoft KB Archive/242089

= New Application Installation Programs Will Not Run =

Article ID: 242089

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 Q242089



SYMPTOMS
When you double-click any setup program, nothing may happen. Also, trying to use the Add/Remove Programs tool in Control Panel or running the setup program from a command prompt may have no effect.



CAUSE
This issue can occur for either of the following reasons:

  Many setup programs are 16-bit. If any .dll files listed in the 'KnownDLLs' value at the following registry location are missing or damaged, Microsoft NT Virtual DOS Machine (NTVDM), which is required to run 16-bit applications, does not run properly: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\WOW  The Config.nt file or the Autoexec.nt file is missing, damaged, or contains unexpected values.



RESOLUTION
To resolve this issue:

  Verify that all of the files listed in the 'KnownDLLs' value at the following registry key are present in either the %SystemRoot%\System32 folder and/or the %SystemRoot%\System folder:  HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\WOW  To replace any files missing from the above list, copy them from a Windows NT 4.0-based computer that has a properly working NTVDM to the %SystemRoot%\System32 and %SystemRoot%\System folder.

NOTE: Not all of the .dll files in the list reside both in the System32 folder and the System folder, but many do. It does not harm your computer to have them duplicated in both locations.</li> If no files are missing, ensure that all the files are undamaged by replacing them with the same files from a Windows NT 4.0-based computer that has a properly working NTVDM.</li> Restart the computer.</li></ol>

<div class="moreinformation_section">

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: setup.exe NTVDM wow

Keywords: kbprb KB242089

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