Article: Q253358
Product(s): Microsoft Exchange
Version(s): winnt:5.5
Operating System(s):
Keyword(s): exc55 kbExchange550preSP4fix kbExchange550sp4Fix
Last Modified: 10-NOV-2000
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The information in this article applies to:
- Microsoft Exchange Server, version 5.5
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SYMPTOMS
========
If there are a large number of Outlook Web Access (OWA) users, an Internet
Information Server (IIS) computer may crash and generate the following stack:
> kv
0000000001b0f8e0 000000006f078019 CDO!FEqBin+0xa (FPO: [2,0,2])
0000000001b0f95c 000000006f077b3b CDO!CMessage__V_ScRespond+0x4c9 (FPO: [ebp 0162ee48] [2,24,4])
0000000001b0f968 000000006f075f6f CDO!CMessage__M_ScDo_ReplyAll+0xb (FPO: [0,0,0])
0000000001b0f96c 000000006f06ca90 CDO!CMessage__V_HrInvoke+0x68f (FPO: [0,0,0])
0000000001b0f97c 0000000070bbd1e1 CDO!CDispatchObj__Invoke+0xa0 (FPO: [9,1,2])
000000000162ee68 0000000070bb23bb 0x0000000070BBD1E1 (No FPO)
00000000680b0009 ffffffffb80000ff 0x0000000070BB23BB (No FPO)
ffffffffff000000 0000000000000000 0xFFFFFFFFB80000FF (No FPO)
> r
EAX=00000008 EBX=00000000 ECX=02dda650 EDX=00000008 ESI=02dda650 EDI=01befe88
EIP=6f08acda ESP=01b0f8dc EBP=0000000b EFL=00000202
CS=001b DS=0023 ES=0023 SS=0023 FS=003b GS=0000
> ln eip
CDO!FEqBin+0xa
CDO!HrFindDataRows-0x26
> u eip
CDO!FEqBin+0xa:
6F08ACDA 8B0A mov ecx,dword ptr [edx]
6F08ACDC 33C0 xor eax,eax
6F08ACDE 3B0E cmp ecx,dword ptr [esi]
6F08ACE0 7511 jne FEqBin+23h
6F08ACE2 8B7E04 mov edi,dword ptr [esi+4]
6F08ACE5 8B7204 mov esi,dword ptr [edx+4]
6F08ACE8 33D2 xor edx,edx
6F08ACEA F3A6 repe cmps byte ptr [esi],byte ptr [edi]
CAUSE
=====
This issue can occur because there is a issue in the Cdo.dll file.
RESOLUTION
==========
To resolve this problem, obtain the latest service pack for Exchange Server 5.5.
For additional 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 4.
Additional query words:
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Keywords : exc55 kbExchange550preSP4fix kbExchange550sp4Fix
Technology : kbExchangeSearch kbExchange550 kbZNotKeyword2
Version : winnt:5.5
Issue type : kbbug
Solution Type : kbfix
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