Netdde.exe Stops Responding When Used from a Service

ID: Q244056

The information in this article applies to:

Microsoft Windows NT Server versions 4.0, 4.0 SP1, 4.0 SP2, 4.0 SP3, 4.0 SP4, 4.0 SP5, 4.0 SP6
Microsoft Windows NT Server, Enterprise Edition versions 4.0, 4.0 SP4, 4.0 SP5, 4.0 SP6
Microsoft Windows NT Workstation versions 4.0, 4.0 SP1, 4.0 SP2, 4.0 SP3, 4.0 SP4, 4.0 SP5, 4.0 SP6

SYMPTOMS

When using Network dynamic data exchange (DDE) to communicate between a Windows NT service and an interactive application on the same machine, the Netdde.exe service may deadlock. This problem occurs only when multiple connection attempts are rapidly made. The application or service may appear to stop responding (hang), and the task manager will be unable to end Netdde.exe. Attempting to shut down Windows NT will fail unless Netdde.exe has been ended by using a debugger or the Kill utility from the Windows NT Resource Kit.

RESOLUTION

A supported fix that corrects this problem is now available from Microsoft, but it has not been fully regression tested and should be applied only to systems experiencing this specific problem. If you are not severely affected by this specific problem, Microsoft recommends that you wait for the next Windows NT 4.0 service pack that contains this fix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the fix. For a complete list of Microsoft Product Support Services phone numbers and information on support costs, please go to the following address on the World Wide Web:

http://www.microsoft.com/support/supportnet/overview/overview.asp

The English version of this fix should have the following file attributes or later:


   Date      Time                 Size    File name     Platform
   -------------------------------------------------------------
   10/15/99  03:28p               118,544 Netdde.exe    Intel
   10/15/99  03:28p               193,296 Netdde.exe    Alpha

STATUS

Microsoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article.

Microsoft has confirmed this to be a problem in Windows NT 4.0.

Additional query words:

Keywords : kbbug4.00 kbfix4.00 kbAPI kbDDE kbGrpPlatform kbDSupport
Version : winnt:4.0,4.0 SP1,4.0 SP2,4.0 SP3,4.0 SP4,4.0 SP5,4.0 SP6
Platform : winnt
Issue type : kbbug