WOW: GP Fault in Ddeml.dll Using Visual Basic Application (142611)


The information in this article applies to:

  • Microsoft Windows NT Workstation 3.51
  • Microsoft Windows NT Server 3.51
This article was previously published under Q142611

SYMPTOMS

16-bit Windows Visual Basic applications using dynamic data exchange (DDE) for inter-process communications may return a general protection fault (GPF) under Windows NT 3.51.

This problem only occurs using Windows NT 3.51; the application does not fail using Windows NT 3.1 or 3.5

CAUSE

Windows NT 3.51 added error detection code to Ddeml.dll to validate DDE data structures. Applications that previously were successful may now fail with a GPF when passing invalid DDEDATA to DdeFreeDataHandle.

STATUS

Microsoft has confirmed this to be a problem in Windows NT version 3.51. This problem was corrected in the latest Windows NT 3.51 U.S. Service Pack. For information on obtaining the Service Pack, query on the following word in the Microsoft Knowledge Base (without the spaces):

S E R V P A C K


Modification Type:MajorLast Reviewed:11/4/2003
Keywords:kbProgramming KB142611
©2003 Microsoft Corporation. All rights reserved.