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Microsoft KB Archive/172821

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Knowledge Base


Expectation of Unbind Response Can Cause Application Failure

Article ID: 172821

Article Last Modified on 6/30/2004



APPLIES TO

  • Microsoft SNA Server 3.0, when used with:
    • Microsoft Windows NT 4.0
  • Microsoft SNA Server 3.0 Service Pack 4, when used with:
    • Microsoft Windows NT 4.0
  • Microsoft SNA Server 4.0, when used with:
    • Microsoft Windows NT 4.0



This article was previously published under Q172821


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: kbbug kbfix KB172821