Microsoft KB Archive/922972

= You may experience poor performance when you use a program that transmits small data packets on a computer that is running Windows Server 2003 with Service Pack 1 or Windows Server 2003 with Service Pack 2 =

Article ID: 922972

Article Last Modified on 11/30/2007

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APPLIES TO

 Microsoft Windows Server 2003 Service Pack 1, when used with:  Microsoft Windows Server 2003, Web Edition

 Microsoft Windows Server 2003, Standard Edition (32-bit x86)

 Microsoft Windows Server 2003, Enterprise Edition (32-bit x86)

 Microsoft Windows Server 2003, Enterprise x64 Edition</li></ul>

 Microsoft Windows Server 2003, Datacenter Edition for Itanium-Based Systems</li></ul>

 Microsoft Windows Server 2003, Enterprise Edition for Itanium-based Systems</li></ul> </li> Microsoft Windows Server 2003, Standard x64 Edition</li> Microsoft Windows Server 2003 Service Pack 2, when used with:  Microsoft Windows Server 2003, Web Edition</li></ul>

 Microsoft Windows Server 2003, Datacenter Edition (32-bit x86)</li></ul>

 Microsoft Windows Server 2003, Datacenter Edition for Itanium-Based Systems</li></ul>

 Microsoft Windows Server 2003, Datacenter x64 Edition</li></ul>

 Microsoft Windows Server 2003 R2 Enterprise x64 Edition</li></ul>

<ul> <li>Microsoft Windows Server 2003, Enterprise Edition (32-bit x86)</li></ul>

<ul> <li>Microsoft Windows Server 2003, Enterprise Edition for Itanium-based Systems</li></ul>

<ul> <li>Microsoft Windows Server 2003 R2 Datacenter x64 Edition</li></ul>

<ul> <li>Microsoft Windows Server 2003, Standard Edition (32-bit x86)</li></ul> </li> <li>Microsoft Windows Server 2003, Enterprise x64 Edition</li> <li>Microsoft Windows Server 2003, Datacenter x64 Edition</li> <li>Microsoft Windows Server 2003 R2 Datacenter Edition (32-Bit x86)</li> <li>Microsoft Windows Server 2003 R2 Enterprise Edition (32-Bit x86)</li> <li>Microsoft Windows Server 2003 R2 Standard Edition (32-bit x86)</li> <li>Microsoft Windows Server 2003 R2 Standard x64 Edition</li></ul>

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<div class="symptoms_section">

SYMPTOMS
On a computer that is running Windows Server 2003 with Service Pack 1 (SP1) or Windows Server 2003 with Service Pack 2 (SP2), you may experience poor performance when you use certain programs that transmit data over TCP/IP connections.

You experience this problem if the following conditions are true:
 * The program transmits small data packets. Generally, these are packets that are 50 bytes or less.
 * The transmitted data packets experience a round-trip time of over 100 milliseconds (ms).
 * Some of the transmitted TCP packets are dropped by a network device, such as a router or a switch.

In this situation, the Windows Server 2003 SP1 or SP2 TCP/IP driver (Tcpip.sys) may take longer than expected to recover from the packet loss.

<div class="resolution_section">

Service pack information
To resolve this problem, obtain the latest service pack for Windows Server 2003. For more information, click the following article number to view the article in the Microsoft Knowledge Base:

889100 How to obtain the latest service pack for Windows Server 2003

Prerequisites
Because of file dependencies, you must be running Windows Server 2003 with SP1 or Windows Server 2003 with SP2 to apply this hotfix. For more information, click the following article number to view the article in the Microsoft Knowledge Base:

889100 How to obtain the latest service pack for Windows Server 2003

Note x64-based versions of Windows Server 2003 include SP1.

Restart requirement
This hotfix contains a kernel mode driver. Therefore, you must restart the computer after you apply this hotfix.

Hotfix replacement information
This hotfix does not replace any other hotfixes.

File information
The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.

Windows Server 2003 with SP2, Itanium-based versions
<div class="workaround_section">

WORKAROUND
To work around this problem, use one of the following methods:
 * Locate the network device that is dropping the TCP packets. Then, perform troubleshooting steps to correct the packet loss problem.
 * Configure the program to send larger TCP packets over the network.

<div class="status_section">

STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.

<div class="moreinformation_section">

MORE INFORMATION
For more information, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

Keywords: kbwinserv2003sp2fix kbwinserv2003presp2fix kbbug kbfix kbhotfixserver kbqfe kbpubtypekc KB922972

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