Article ID: 94279 - View products that this article applies to.
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You may receive the following error message while running an MS-DOS-based application under Windows or Windows for Workgroups:
This error message indicates that an MS-DOS-based application has caused the processor to execute an invalid instruction.
EMM386 Exception Error #6
Although the error message is provided by EMM386.EXE, it is not the cause, nor is it directly related to the problem. The error is probably caused by a corrupt .EXE file or a bad memory chip.
When Windows starts, it turns off EMM386.EXE but leaves its error handler installed. When the CPU notifies Windows of a problem, it passes the error to the default handler, which in this case is EMM386.EXE.
EMM386 Exception Error #6 indicates an "invalid opcode." According to "Microsoft's 80386/80486 Programming Guide" second edition (pages 122-123), this error can be caused by either of the following:
If you are using MS-DOS 6.2 or later or Windows for Workgroups version 3.11, you may be able to correct this problem by removing HIGHSCAN from the EMM386.EXE command in your CONFIG.SYS file.
This error can also be caused by upper memory conflicts. See the following article for more information:
(https://support.microsoft.com/kb/112816/EN-US/ )Locating and Excluding RAM/ROM Addresses in the UMA
Exception Error #6 with Microsoft Backup for WindowsIf you receive the "EMM386 Exception Error #6" while you are running Microsoft Backup for Windows, you may have an incompatible third-party virtual device driver (VxD).
Use a text editor, such as Microsoft Windows Notepad, to edit the [386Enh] section of the SYSTEM.INI file and use a semicolon to remark out the following lines:
NOTE: VFINTD.386 is the virtual device driver for MS-DOS 6.x Backup for Windows and should not be removed.
Exception Error #6 With Older Version of After DarkThis error can occur while running older version of Berkeley Systems' After Dark with other applications (such as Intuit's Quicken) in Microsoft Windows.
To solve the problem, remove After Dark.
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