Microsoft small business knowledge base

Article ID: 196237 - Last Review: February 24, 2014 - Revision: 4.2

This article was previously published under Q196237
This article has been archived. It is offered "as is" and will no longer be updated.

On This Page


Only one SDLC connection to a Downstream PU (DSPU) will function correctly even though multiple SDLC connections are configured for concurrent usage to multiple DSPUs over the same SDLC adapter. Even though only one connection is actually in use at a time, SNA Server Manager shows an active status for all of the configured DSPU SDLC connections. This was reported by a customer using the IBM MPCA SDLC adapter, but can occur with any SDLC adapter that uses the SDLC "dumb card" driver interface provided by SNA Server.


SNA Server 3.0

To resolve this problem, obtain the latest service pack for SNA Server version 3.0. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
184307  ( ) How to Obtain the Latest SNA Server Version 3.0 Service Pack

SNA Server 4.0

This problem was corrected in the latest SNA Server version 4.0 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


Microsoft has confirmed this to be a problem in the products listed at the beginning of this article. This problem was first corrected in SNA Server 3.0 Service Pack 4.

  • Microsoft SNA Server 3.0 Service Pack 4
  • Microsoft SNA Server 4.0
  • Microsoft SNA Server 3.0 Service Pack 2
  • Microsoft SNA Server 3.0 Service Pack 3
  • Microsoft SNA Server 4.0 Service Pack 1
kbnosurvey kbarchive kbbug kbfix KB196237
Additional support options
Ask The Microsoft Small Business Support Community
Contact Microsoft Small Business Support
Find Microsoft Small Business Support Certified Partner
Find a Microsoft Store For In-Person Small Business Support