KnowledgeBase Archive

An Archive of Early Microsoft KnowledgeBase Articles

View on GitHub

Q162681: Unexpected Result in NCB Callname After Canceling a Listen

Article: Q162681
Product(s): Microsoft Windows NT
Version(s): WINNT:3.5 3.51 4.0
Operating System(s): 
Keyword(s): kbnetwork kbNetBIOS kbSDKPlatform kbGrpDSNet
Last Modified: 10-AUG-2001

-------------------------------------------------------------------------------
The information in this article applies to:

- Microsoft Windows NT Workstation versions 3.5, 3.51, 4.0 
- Microsoft Windows NT Server versions 3.5, 3.51, 4.0 
-------------------------------------------------------------------------------

SYMPTOMS
========

A Windows NT NetBIOS application's network control block (NCB) may appear
corrupted. If Ncb.listen is posted with an asterisk (*) for the called name, the
string "nnection context" is returned in the NCB callname structure whenever
Ncb.listen is canceled before a client responds to it.

CAUSE
=====

The remote address of the client should be copied to the NCB structure on the
completion of the listen. However, because a client did not respond to the
listen, the unexpected string is copied to the structure.

STATUS
======

Microsoft has confirmed this to be a problem in Windows NT versions 3.5x and
4.0. We are researching this problem and will post new information here in the
Microsoft Knowledge Base as it becomes available.

MORE INFORMATION
================

Because the NCB callname is not used when Ncb.listen is canceled, this problem
does not negatively affect NetBIOS applications.


Additional query words: prodnt call cancelled
======================================================================
Keywords          : kbnetwork kbNetBIOS kbSDKPlatform kbGrpDSNet 
Technology        : kbWinNTsearch kbWinNTWsearch kbWinNTW400 kbWinNTW400search kbWinNT351search kbWinNT350search kbWinNT400search kbWinNTW350 kbWinNTW350search kbWinNTW351search kbWinNTW351 kbWinNTSsearch kbWinNTS400search kbWinNTS400 kbWinNTS351 kbWinNTS350 kbWinNTS351search kbWinNTS350search
Version           : WINNT:3.5 3.51 4.0

=============================================================================

THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY.