Microsoft KB Archive/147712

= Application Exception When AppleTalk Clients Try Connecting =

Article ID: 147712

Article Last Modified on 11/19/2003

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APPLIES TO


 * Microsoft SNA Server 3.0, when used with:
 * Microsoft Windows NT 4.0
 * Microsoft SNA Server 2.11 Service Pack 1, when used with:
 * Microsoft Windows NT 4.0

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This article was previously published under Q147712





SYMPTOMS
The SNA Server stops responding (hangs) and Appletalk client computers are unable to attain session connections. In the Event Viewer, the following application events appear:

Event ID: 624

Source: SNADUMP.LOG

Description: A process SNABASE.EXE ended abnormally due to a protection violation, or similar condition.

Event ID: 4097

Source: Dr. Watson Log

This application, SNABASE.DBG generated an applicaiton error. The error

occurred on. The exception generated was C0000005 at address.

A portion of the DRWTSN32.LOG file states the following:   App: snabase.DBG (pid=160) When: @ Exception number: c0000005 (access violation) NOTE: Your DRWTSN32.LOG file will appear somewhat different than this example.



CAUSE
The SNAAT.DLL send routine is not checking to see if the L-Table is already in a closing state. Therefore, it tries to access its pending queue, which has been released. This causes the application exception in SNABASE.EXE.



STATUS
Microsoft has confirmed this to be a problem in SNA Server version 2.11 and 2.11 Service Pack 1. This problem was corrected in the latest Microsoft SNA Server 2.11 U.S. Service Pack. For information on obtaining the 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: prodsna

Keywords: kbbug kbfix kbnetwork KB147712

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