SNA Server Admin Application Exception When Use Banyan Vines (150304)


The information in this article applies to:

  • Microsoft SNA Server 2.1, when used with:
    • the operating system: Microsoft Windows NT
  • Microsoft SNA Server 2.11, when used with:
    • the operating system: Microsoft Windows NT
  • Microsoft SNA Server 2.11 SP1, when used with:
    • the operating system: Microsoft Windows NT
This article was previously published under Q150304

SYMPTOMS

When you exit the SNA Server Admin, you may get an application exception if the SNA Server is installed on a Microsoft Windows NT Server running the Banyan Vines version 5.56(30) redirector. The application exception is similar to the following:
snaadmin.exe - application error

The instruction at "0x77f8d637" referenced memory at "0x00000010". The memory could not be "written".

Click OK to terminate the application.
In addition, SNA Server logs the following message in the Application Event log:
Event ID: 560
Source: SNA Base Service
Description: Read from mailslot failed, rc = 165

CAUSE

The application exception occurs when SNA Server Admin tries to close a Vines socket from the Client/Server interface's detach entry point.

The Event 560 message is caused because the 5.56(30) version of the Banyan Vines redirector returns a different error code on the VnsSocketReceive() API than earlier versions when the socket is closed.

These two problems did not occur with previous versions of the Banyan Vines redirector.

RESOLUTION

Snadmod.dll and Snabv.dll have been updated so that the Vines socket is closed before the Client/Server interface's detach entry point is called.

STATUS

Microsoft has confirmed this to be a problem in SNA Server versions 2.1, 2.11, and 2.11.sp1. 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

Modification Type:MajorLast Reviewed:11/26/2003
Keywords:kbbug kbfix kbnetwork KB150304
©2003 Microsoft Corporation. All rights reserved.