PRB: 16-Bit App Launched from Service Always in Own VDM

ID: Q154115

The information in this article applies to:

• Microsoft Win32 Application Programming Interface (API) included with: - Microsoft Windows NT versions 3.51, 4.0

SYMPTOMS

When a 16-bit Windows application is launched from a Windows NT service or from a 32-bit process that was launched from a service, the Windows application is always launched into its own separate VDM (Virtual DOS Machine). 16-bit applications launched by other 16-bit applications always run in the same VDM.

STATUS

This behavior is by design.

Keywords          : kbnokeyword kbKernBase kbService kbGrpKernBase 
Version           : WINDOWS NT:3.51,4.0;
Platform          : NT WINDOWS
Issue type        : kbprb

Last Reviewed: September 17, 1997