SYMPTOMS
When you try to run a 16-bit MS-DOS-based program, you may receive the following error message:
NTVDM has encountered a System Error.
Access is denied.
Choose 'Close' to terminate the application.
For example, you try to run the Command.com program or the Edit.exe program.
CAUSE
This problem occurs because a regression may occur in the Microsoft Windows NT virtual DOS machine (NTVDM) subsystem after you apply an earlier hotfix.
For additional information about this earlier hotfix, click the following article number to view the article in the Microsoft Knowledge Base:
324446
Terminal Server and connected Terminal Services clients pause when a Terminal Services client logs on or logs off
RESOLUTION
Hotfix information
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that this article describes. Apply it only to systems that are experiencing this specific problem.
To resolve this problem, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:
Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.
Prerequisites
No prerequisites are required.
Restart requirement
You must restart your computer after you apply this hotfix.
File information
The English version of this hotfix has the file attributes (or later) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the
Time Zone tab in the Date and Time tool in Control Panel.
Date Time Version Size File name
--------------------------------------------------------------
10-Feb-2004 19:47 5.0.2195.6897 30,160 Mountmgr.sys
17-Jun-2004 18:20 5.0.2195.6942 1,704,128 Ntkrnlmp.exe
17-Jun-2004 18:20 5.0.2195.6942 1,703,744 Ntkrnlpa.exe
17-Jun-2004 18:20 5.0.2195.6942 1,725,440 Ntkrpamp.exe
17-Jun-2004 18:19 5.0.2195.6942 1,680,832 Ntoskrnl.exe