Article ID: 217149
Article Last Modified on 10/28/2006
APPLIES TO
- Microsoft Exchange Server 5.5 Service Pack 2
This article was previously published under Q217149
SYMPTOMS
The Microsoft Exchange Chat Service version 5.5 Service Pack 2 may terminate unexpectedly when sending a zero byte privmsg or whisper. A call stack similar to the following may appear in the Drwtsn32.log file:
FramePtr RetAddr Param1 Function Name
02ffe894 0042030d 02ffeb20 CHATSVC!CIrcUser::SendMsg+0x5b4
02ffea7c 0042d691 02ffeb20 CHATSVC!CChannel::SendMsg+0x7bd
02ffec0c 00443685 02ffec2c CHATSVC!CIrcUser::CommandMessage+0x701
02ffed44 00442f68 02ffedcc CHATSVC!CIrcUser::MessageInt+0x655
02ffed98 00442b58 02ffedcc CHATSVC!CIrcUser::Message+0x288
02fffdf0 00471d42 01d57050 CHATSVC!CIrcUser::Incoming+0x198
02ffff5c 00471674 00000000 CHATSVC!CSocket::IOCompletionRead+0x642
02ffff80 0047833c 00000000 CHATSVC!CSocket::IOCompletion+0x94
02ffffb0 0047837b 02ffffec CHATSVC!CService::ThreadPool+0x13c
02ffffb8 77f04f3e 01d4de5c CHATSVC!CService::ThreadPoolThunk+0xb
02ffffec 00000000 00000000 0x77f04f3e
RESOLUTION
To resolve this problem, obtain the latest service pack for Exchange Server version 5.5. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
191014 XGEN: How to Obtain the Latest Exchange Server 5.5 Service Pack
The English version of this fix should have the following file attributes or later:
Component: Chat Service
| File name | Version |
|---|---|
| Chatsvc.exe | 5.5.2549.0 |
STATUS
Microsoft has confirmed that this is a problem in the Microsoft Exchange Chat Service that isincluded with Microsoft Exchange Server version 5.5 Service Pack 2. This problem was first corrected in Exchange Server 5.5 Service Pack 3.
MORE INFORMATION
Most IRC and IRCX clients prohibit sending a zero byte whisper or privmsg but this problem can occur when you use Telnet. The problem can occur with any of the following functions:
- PRIVMSG
- NOTICE
- WHISPER
- DATA
- REQUEST
- REPLAY
Keywords: kbhotfixserver kbqfe kbbug kbfix kbqfe KB217149
