Microsoft KB Archive/276037

= SNA Server Access Violation After Logging Event 3 =

Article ID: 276037

Article Last Modified on 7/13/2004

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APPLIES TO


 * Microsoft SNA Server 4.0
 * Microsoft SNA Server 3.0 Service Pack 2
 * Microsoft SNA Server 3.0 Service Pack 3
 * Microsoft SNA Server 3.0 Service Pack 4
 * Microsoft SNA Server 4.0
 * Microsoft SNA Server 4.0 Service Pack 1
 * Microsoft SNA Server 4.0 Service Pack 2
 * Microsoft SNA Server 4.0 Service Pack 3

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This article was previously published under Q276037



SYMPTOMS
In SNA Server, an Access Violation (AV) occurs after logging Event 3. If this problem occurs, the SNA Server service terminates unexpectedly. The following events may be logged in the application event log at the time of the failure:

Event ID: 3

Source: SNA Server

Description: (1106) Node Configuration Error

NOTE: Subcode X'1106' indicates that the configuration file (Com.cfg) is corrupted.

Event ID: 624

Source: SNA Server

Description: Creating dump file [path]\snadump.log for snaserver.exe

If Drwtsn32.exe is configured as the default debugger on the SNA Server system, the Drwtsn32.log will be updated with the Access Violation information for Snaservr.exe.

In the reported instance of this problem, the SNA Server was also logging the following event prior to the Access Violation:

Event ID: 22

Source: SNA Server

Description: APPC session activation failure: BIND negotiated parameters unacceptable



CAUSE
Under certain circumstances, the SNA Server service (node) can delete an Advanced Program-to-Program Communications (APPC) mode record and its associated mode data record from its internal configuration structures even when the mode data record is still being used by another mode record. This causes the configuration to become corrupt, which will lead to the problem described here.



RESOLUTION
To resolve this problem, obtain the latest service pack for SNA Server 4.0. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

215838 How to Obtain the Latest SNA Server Version 4.0 Service Pack



STATUS
Microsoft has confirmed that this is a problem in SNA Server versions 3.0 (all Service Packs), 4.0, 4.0 SP1, 4.0 SP2, and 4.0 SP3.

This problem was first corrected in SNA Server 4.0 Service Pack 4.

Additional query words: Drwtsn32

Keywords: kbbug kbfix kbsna400presp4fix kbqfe kbsna400sp4fix KB276037

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