NOTE: This article is to replace the previous Knowledge Base article KB944011.
After applying Service Pack 2 on your Windows Server 2003 computer, you may experience one or more of the following symptoms:
1. If it is an Exchange server, Exchange Queues become clogged in the MAPI delivery queue. Messages get stuck in this queue and cannot be delivered properly.
2. ActiveSync may not work on the Exchange Server 2003.
3. For the IIS server, browsing the Public and/or Default Website in IIS results in error "Page cannot be displayed".
4. Non-Paged Pool (KERNEL) memory becomes exhausted.
5. For a printer server, the printing job may be partially missing.
6. For a SQL server, if you have an application that connects to SQL Server by using TCP/IP, you may intermittently receive one of the following error messages:
Error message 1
[Microsoft][ODBC SQL Server Driver][DBNETLIB] General Network error. Check your network documentation
Error message 2
ERROR [08S01] [Microsoft][SQL Native Client]Communication link failure
Error message 3
System.Data.SqlClient.SqlException: A transport-level error has occurred when sending the request to the server. (provider: TCP Provider, error: 0 - An existing connection was forcibly closed by the remote host.)
The problem may be the result of combining the NIC driver, and the TCP Chimney feature that comes with the Scalable Networking Pack, which is included in Windows 2003 SP2.
The TCP Chimney feature is a stateful offload that is enabled to be the default in Windows Server 2003 Scalable networking Pack. TCP Chimney offload enables TCP/IP processing to be offloaded to network adapters that can handle the TCP/IP processing in hardware.
With TCP Chimney feature, some NIC driver cause high NonPaged pool usage. The tag is MmCm.
Once there is less than 30MB of available non paged pool memory, HTTP.sys starts rejecting connections.
Disable the TCP Chimney feature on the server using the Netsh.exe tool. Specifically, to turn off TCP Chimney by using the Netsh.exe tool, we followed these steps:
1. Click Start, click Run, type cmd, and then click OK.
2. At the command prompt, type:
Netsh int ip set chimney DISABLED
3. Press the ENTER key.
For more information on the TCP Chimney feature and the Scalable Networking Pack,
see the following article:
912222 The Microsoft Windows Server 2003 Scalable Networking Pack release
Query words: NetXtreme 2003 SP2 Scalable Networking Pack MmCm Tag TCPChimney broadcom KB944011 944011
Article ID: 945977 - Last Review: Dec 5, 2007 - Revision: 1