DOCUMENT:Q242089 10-AUG-2001 [winnt] TITLE :New Application Installation Programs Will Not Run PRODUCT :Microsoft Windows NT PROD/VER:winnt:4.0 OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Windows NT Server version 4.0 ------------------------------------------------------------------------------- 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: 1. 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 2. 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. 3. 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. 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 Additional query words: setup.exe NTVDM wow ====================================================================== Keywords : Technology : kbWinNTsearch kbWinNT400search kbWinNTSsearch kbWinNTS400search kbWinNTS400 Version : winnt:4.0 Issue type : kbprb ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 2001.