SNA Workstation 4.0 Access Violation When SnaBase Ends (243917)


The information in this article applies to:

  • Microsoft SNA Server 4.0
  • Microsoft SNA Server 4.0 SP1
  • Microsoft SNA Server 4.0 SP2
  • Microsoft SNA Server 4.0 SP3
This article was previously published under Q243917

SYMPTOMS

When using SNA Workstation 4.0 or 4.0 Service Pack 1, the following problems may occur:
  • a 3270 emulator may stop responding while opening a new 3270 session
  • SnaBase.exe may fail with an access violation (C0000005) when being stopped, with the following stack trace:


    FramePtr  RetAddr   Param1   Param2   Param3   Function Name
13f6fca8  77f64ba2  00080000 000f2440 13f6fcd4 NTDLL!RtlpCoalesceFreeBlocks+0x2bc
13f6fcd8  0101dbf9  00080000 00000000 000f2448 NTDLL!RtlFreeHeap+0x7c
13f6fce8  0101b760  00000000 6723e4a8 00000001 SNABASE!CleanupCaching+0x19
13f6fcf0  6723e4a8  00000001 00000000 6727a5e0 SNABASE!NapTermCallback+0xa0
13f6fd10  67239925  00000000 00000000 00000000 SNADMOD!TermSnaDmod_int+0x68
6727a5e0  00000002  000000f4 000000f8 000000f0 SNADMOD!DMODServiceThread+0xa55

CAUSE

This problem is caused by a regression introduced into SNA Workstation 4.0 Service Pack 1 due to an unrelated change made within SNA Server, which shares various components. The problem does not affect any version of SNA Server. It is specific to SNA Workstation only.

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 Microsoft SNA Workstation version 4.0 and version 4.0 Service Pack 1.

This problem was first corrected in SNA Server 4.0 Service Pack 4.
Modification Type:MajorLast Reviewed:11/24/2003
Keywords:kbbug kbfix kbQFE kbSNA400PreSP4fix kbSNA400sp4fix KB243917
©2003 Microsoft Corporation. All rights reserved.