# README.TXT: Patch 57 for SNA Server 2.0

ID: Q121265

The information in this article applies to:

- Microsoft SNA Server for Windows NT 2.0

## SUMMARY

The following is the readme file that accompanies SNA Server 2.0 patch 57 (sna20.p57):

Note that this article reflects the text of a static document. Therefore, some of the information in this article may be outdated. For example, as of May 20, 1996, Microsoft no longer maintains support forums on CompuServe.

## MORE INFORMATION

******************* Beginning of Readme *************************** Product: Microsoft SNA Server for Windows NT v2.0 Update: Patch #57 (includes patch #55, 44, 30) Status: Confirmed

PKZIP 2.04g format -- uncompress using the "-d" option.

Date: August 26, 1994

Modules updated:

    \SYSTEM\SNADLC.DLL     08/12/94  04:16p    75,264 SNADLC.DLL

\SYSTEM\HWSETUP\SNADLC\SNADLC.DLL (same file)

Bugs fixed:

2536 802.2 connections drop - no link service available

The SNA Server 802.2 link service was not freeing control blocks correctly when a timer would be canceled. Over time, this would cause all control blocks to be used, causing all connections configured over the link service to fail. This problem would coincide with Windows NT application event log error:

       Event 39: Connection <value> failed: No link service available

XXXX 802.2 link service to run on Windows NT 3.5.

The SNA Server 2.0 802.2 link service may encounter an application exception when starting on a system installed with Windows NT 3.5 beta (build 612 or greater).

2058 SNALINK application exception in 802.2 link service.

Under stress, the SNA Server 802.2 link service may fail with an application exception. Looking at the drwtsn32.log, the failure occurred in routine "sbpa4s", caused by an uninitialized variable

1985 SNA Server DLC timers not optimally configured (Patch #30)

Ensure that t1, t2, and ti timers configured for an SNA Server 802.2 connection defaults are configured optimally within the configuration file.

Update Procedure:

- Stop the SNA Server service

- Copy the new SNADLC.DLL to the above locations on the server.

*********************** End of Readme *******************************

SNA Server 2.0 patches are located on:

1. Library #2 of the MSSNA Compuserve forum.

2. The Internet server under BUSSYS\SNASRVR\SUP-ED\FIXES\ (supported

       patches) OR on BUSSYS\SNASRVR\UNSUP-ED\FIXES\ (unsupported patches).

Additional reference words: prodsna 2.00 KBCategory: kbnetwork KBSubCategory: ntdistrib

Last Reviewed: April 24, 1996