Multiple Processes Are Able to Open the Same Winsock Port (142634)
The information in this article applies to:
- Microsoft Windows NT Server 3.51
- Microsoft Windows NT Server 4.0
This article was previously published under Q142634 SYMPTOMS
A Winsock application may appear to have stopped responding or it may not
be able to send or receive data. All other services and applications,
including other Winsock applications, continue to function without
problems.
CAUSE
On systems running multiple Winsock applications that request the same
specific port, repeated requests for a Winsock port that was in the process
of being opened could result in two or more of the processes being assigned
the port. The last process assigned would continue to function normally,
while the other processes would fail to send or receive data over the port.
RESOLUTIONTo resolve this problem, obtain the latest service pack for Microsoft Windows NT 4.0. For additional information, click the following article number to view the article in the
Microsoft Knowledge Base:
152734 How to Obtain the Latest Windows NT 4.0 Service Pack
As a temporary solution, an updated version of Afd.sys has been created to correct the problem. After applying the fix, the system must be restarted before the change will take effect.
STATUS
Microsoft has confirmed this to be a problem in Windows NT versions 3.51
and 4.0. This problem was corrected in the latest Microsoft Windows NT 4.0
U.S. Service Pack. For information on obtaining the service pack, query on
the following word in the Microsoft Knowledge Base (without the spaces):
| Modification Type: | Major | Last Reviewed: | 8/8/2001 |
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| Keywords: | kbAPI kbnetwork kbWinsock KB142634 |
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