KnowledgeBase Archive

An Archive of Early Microsoft KnowledgeBase Articles

View on GitHub

Q172821: Expectation of Unbind Response Can Cause Application Failure

Article: Q172821
Product(s): Microsoft SNA Server
Version(s): WINDOWS:2.11,3.0,3.0 SP1
Operating System(s): 
Keyword(s): 
Last Modified: 22-OCT-2000

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

- Microsoft SNA Server, versions 2.11, 3.0, 3.0 SP1, on platform(s):
   - the operating system: Microsoft Windows NT 
-------------------------------------------------------------------------------


SYMPTOMS
========

If an LUA RUI application does not respond to an UNBIND request, SNA Server will
abend the application.

CAUSE
=====

SNA Server requires an LUA RUI application to respond to an UNBIND request
before allowing a new session to be bound to the LU. Some applications are not
written to respond to this request. For example CM/2 does not have this
requirement.

RESOLUTION
==========

A new registry entry has been added to the following registry key:

  HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\ 
  Snabase\Parameters\Client

The new entry is DontWaitUnbindResponse. If it is present and set to any numeric
value, SNA Server will not expect a response to the UNBIND from the application.

STATUS
======

Microsoft has confirmed this to be a problem in SNA Server 3.0 and 3.0 Service
Pack 1 (SP1). This problem was corrected in the latest SNA Server version 3.0
U.S. Service Pack. For information on obtaining this Service Pack, query on the
following word in the Microsoft Knowledge Base (without the spaces):

  S E R V P A C K

Additional query words: RUI

======================================================================
Keywords          :  
Technology        : kbAudDeveloper kbSNAServSearch
Version           : WINDOWS:2.11,3.0,3.0 SP1
Issue type        : kbbug
Solution Type     : kbfix

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

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.