DOCUMENT:Q188989  30-APR-1999  [exchange]
TITLE   :XADM: IS Stops Unexpectedly Formatting a Binary Property Value
PRODUCT :Microsoft Exchange
PROD/VER:WinNT:5.5
OPER/SYS:
KEYWORDS:exc55sp2fix

======================================================================
-------------------------------------------------------------------------------
The information in this article applies to:

 - Microsoft Exchange Server, version 5.5 
-------------------------------------------------------------------------------


SYMPTOMS
========

During normal operations, the information store may stop unexpectedly, and an
Access Violation error message appears on the server console. If Dr. Watson is
active as the default debugger, a Dr. Watson log and a User.dmp file (if
configured to create a User.dmp file) may be produced.

CAUSE
=====

The information store stops because an attempt is made to de-reference a NULL
pointer during a memory copy operation.

RESOLUTION
==========

To resolve this problem, obtain the latest service pack for Exchange Server
version 5.5. For more information, please see the following article in the
Microsoft Knowledge Base:

   Q191014 XGEN: How to Obtain the Latest Exchange Server 5.5 Service Pack


STATUS
======

Microsoft has confirmed this to be a problem in Microsoft Exchange Server
version 5.5. This problem was first corrected in Exchange Server 5.5 Service
Pack 2.



MORE INFORMATION
================

The Drwtsn32.log file that is produced will look similar to the following. Note
that the ESI register is zero:

   Microsoft (R) Windows NT (TM) Version 4.00 DrWtsn32
   Copyright (C) 1985-1995 Microsoft Corp. All rights reserved.

   Application exception occurred:
         App: STORE.DBG (pid=76)
         When: 2/19/1998 @ 9:39:5.106
         Exception number: c0000005 (access violation)

   State Dump for Thread Id 0x1aa

   EAX=055252a8  EBX=9f3f0002  ECX=27cfc000  EDX=9f3f0000  ESI=00000000
   EDI=188ca081
   EIP=00437b76  ESP=148df964  EBP=188ca070  EFL=00000216
   CS=001b  DS=0023  ES=0023  SS=0023  FS=0038  GS=0000

   function:STORE!@EcFormatMVBinary

         .....
         00437B66  761F             jbe         EcFormatMVBinary+66h

         0437B68   8B12             mov         edx,dword ptr [edx]

         00437B6A  8B7004           mov         esi,dword ptr [ibMost]

         00437B6D  8D7C1502         lea         edi,dword ptr [ebp+edx+2]

         00437B71  8BD1             mov         edx,ecx

         00437B73  C1E902           shr         ecx,2

   FAULT => 00437B76  F3A5             rep movs    dword ptr es:[edi],dword
         ptr [esi]
         .....

   *----> Stack Back Trace <----*
   FramePtr  RetAddr   Param1   Param2   Param3   Function Name
   148df974  00410c6b  00007fff 00000001 055252a8
    STORE!EcFormatMVBinary+0x5d
   148df99c  0040f898  00007fff 055252a0 148df9c8
    STORE!EcFormatValue+0x1b1
   148df9cc  004268d6  00007fff 00000001 00000000 STORE!EcFormatRow+0xcc
   148dfa20  0040c558  00000001 0000355a 19ac8ee8
    STORE!EcGetPropsSpecific+0x17c
   00000006  00000000  00000000 00000000 00000000 STORE!EcRpc+0x471

======================================================================
Keywords          : exc55sp2fix 
Technology        : kbExchangeSearch kbExchange550 kbZNotKeyword2
Version           : WinNT:5.5
Issue type        : kbbug
Solution Type     : kbfix

=============================================================================

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