Command Window Does Not Close When TSR Issues INT5c For DLC

ID: Q138712

The information in this article applies to:

Microsoft Windows NT Workstation version 3.51
Microsoft Windows NT Server version 3.51

SYMPTOMS

When you load any terminate-and-stay-resident (TSR) program from AUTOEXEC.NT that issues INT5c to do DLC work in the MS-DOS Command Prompt window, the window does not close.

CAUSE

The TSR is running in a win32 process (NTVDM.EXE) which has loaded VDMREDIR.DLL and DLCAPI.DLL. These DLLs should close the adapter when the program terminates. In either case, the adapter should be closed by the DLC device driver when the program terminates.

STATUS

Microsoft has confirmed this to be a problem in Windows NT version 3.51. A fix to this problem is in development, but has not been regression-tested and may be destabilizing in production environments. Microsoft does not recommend implementing this fix at this time. Contact Microsoft Product Support Services for more information on the availability of this fix.

Additional query words: prodnt DLC.SYS

Keywords : kbnetwork ntnetserv ntprotocol kbbug3.51 NTSrvWkst
Version : 3.51
Platform : winnt
Issue type :