Attachmate SDLC Connection Doesn't Activate                   [winnt]
ID: Q125025    CREATED: 19-JAN-1995   MODIFIED: 20-JAN-1995
2.10
WINDOWS
MSONLY | kb3rdparty

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The information in this article applies to:

 - Microsoft SNA Server for Windows NT, version 2.1
 - Microsoft SNA Workstation for Windows NT, version 2.1
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SYMPTOMS
========

Due to a problem in early versions of the Attachmate SDLC setup script for SNA Server, a Registry setting doesn't get set properly during link service installation on a machine running Windows NT version 3.5 and SNA Server version 2.1.

This setup problem causes the SDLC connection to fail to activate (the connection will stay Inactive or On Demand, even though the SNA Server service activates OK).

To determine if this problem is occurring, the following event will be logged in the Windows NT application event log:

  169  Failed to open device driver \Device\, Windows NT
       rc = C0000033

  (C0000033 = object name invalid)

If this error is present, the setup process failed to configure a registry setting for the SDLC link service. To correct this problem, run REGEDT32 and set the following registry entry:

  HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Services/[...]

    /ATMSDLC1/Parameters/Extra Parameters  (Attachmate SDLC)

  or

    /ADVSDLC1/Parameters/Extra Parameters  (Advanced SDLC)

  DeviceName: REG_SZ: <value>

If no value was configured for DeviceName, set the device name to ATMSYNC if the Attachmate SDLC adapter is being used, or to ADVSYNC if the Attachmate Advanced SDLC adapter is being used.

RESOLUTION
==========

This problem doesn't occur when using more recent versions of the Attachmate SDLC driver support available on the Attachmate Customer Support BBS number at (206) 649-6660.

The correct driver must be used for the appropriate adapter. The following self-extracting files are available on the Attachmate BBS:

  SDLCNT21.EXE : Attachmate SDLC driver, for SNA Server 2.1

  ADSDLC21.EXE : Attachmate Advanced SDLC driver, for SNA Server 2.1

The Attachmate SDLC adapter is a 1/2-length card and has a switch pack with only 5 dip switches on it. The Attachmate Advanced SDLC adapter is a 2/3-length card and has 8 dip switches on the switch pack.

The Attachmate products discussed here are manufactured by a vendor independent of Microsoft; we make no warranty, implied or otherwise, regarding these products' performance or reliability.

Additional reference words: prodsna 2.10 attachmate sdlc 169
KBCategory: kb3rdparty
KBSubcategory: nthw
