DOCUMENT:Q103325 08-AUG-2001 [winnt] TITLE :WOWEXEC Errors Caused by Incorrect COMMAND.COM File PRODUCT :Microsoft Windows NT PROD/VER:3.1 3.5 3.51 4.0 OPER/SYS: KEYWORDS:kb3rdparty kbinterop ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Windows NT Server version 3.1 - Microsoft Windows NT Workstation version 3.1 - Microsoft Windows NT Advanced Server, version 3.1 - Microsoft Windows NT Workstation versions 3.5, 3.51, 4.0 - Microsoft Windows NT Server versions 3.5, 3.51, 4.0 ------------------------------------------------------------------------------- Windows NT provides a COMMAND.COM file that must be used for MS-DOS-based and Windows 3.0 or 3.1-based applications to run properly. If the COMMAND.COM file that Windows NT provides is replaced with a version from MS-DOS, an error message occurs just after a successful logon. MORE INFORMATION ================ If the COMMAND.COM file provided with Windows NT is replaced with a COMMAND.COM file from MS-DOS version 3.3, 4.01, or 6.0, the following error message appears: wowexec config.nt. The system file is not suitable for running DOS and WINDOWS applications. Choose 'Close' to terminate the application. If the COMMAND.COM file provided with Windows NT is replaced with a COMMAND.COM file from MS-DOS version 5.0, the following error message appears: wowexec An application has attempted to directly access the hard disk, which cannot be supported. This may cause the application to function incorrectly. Choose 'Close' to terminate the application. If one of the above error messages appears, make sure that the COMMAND.COM file provided with Windows NT is located in the WINNT\SYSTEM32 subdirectory. The correct COMMAND.COM file should have the following size/date: Windows NT version: Size: Date: ---------- ----- -------- 3.1 49931 07/24/93 3.5 50045 09/04/94 3.51 50045 05/26/95 4.0 50384 08/02/96 This file can be expanded off of the original media. It is located in the following locations in compressed form as COMMAND.CO_: Windows NT version: CD-ROM 3.5-inch disk 5.25-inch disk ---------- ------ ------------- -------------- 3.1 \I386 Disk #20 Disk #25 3.5 \I386 Disk #17 N/A 3.51 \I386 Disk #20 N/A 4.0 \I386 N/A N/A Additional query words: prodnt 3.10 wowexec.exe wow ====================================================================== Keywords : kb3rdparty kbinterop Technology : kbWinNTsearch kbWinNTWsearch kbWinNTW400 kbWinNTW400search kbWinNT351search kbWinNT350search kbWinNT400search kbWinNTW350 kbWinNTW350search kbWinNTW351search kbWinNTW351 kbWinNTW310 kbWinNTSsearch kbWinNTS400search kbWinNTS400 kbWinNTS351 kbWinNTS350 kbWinNTS310 kbWinNTAdvSerSearch kbWinNTAdvServ310 kbWinNTS351search kbWinNTS350search kbWinNTS310search kbWinNT310Search kbWinNTW310Search Version : 3.1 3.5 3.51 4.0 ============================================================================= 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.