Microsoft KB Archive/924325

= Network applications that use the NetBT keep-alive transmissions may not work correctly after you install the Windows Server 2003 Scalable Networking Pack on a Windows Server 2003-based computer =

Article ID: 924325

Article Last Modified on 10/11/2007

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APPLIES TO


 * Microsoft Windows Server 2003, Standard Edition (32-bit x86)
 * Microsoft Windows Server 2003, Enterprise Edition
 * Microsoft Windows Server 2003, Web Edition
 * Microsoft Windows Server 2003, Datacenter Edition (32-bit x86)
 * Microsoft Windows Server 2003, Standard x64 Edition
 * Microsoft Windows Server 2003, Enterprise x64 Edition
 * Microsoft Windows Server 2003, Datacenter x64 Edition
 * Microsoft Windows Server 2003, Enterprise Edition for Itanium-based Systems
 * Microsoft Windows Server 2003, Datacenter Edition for Itanium-Based Systems
 * Microsoft Windows Server 2003 R2 Standard Edition (32-bit x86)
 * Microsoft Windows Server 2003 R2 Enterprise Edition (32-Bit x86)
 * Microsoft Windows Server 2003 R2 Datacenter Edition (32-Bit x86)
 * Microsoft Windows Server 2003 R2 Standard x64 Edition
 * Microsoft Windows Server 2003 R2 Enterprise x64 Edition
 * Microsoft Windows Server 2003 R2 Datacenter x64 Edition

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SYMPTOMS
Important This article contains information about how to modify the registry. Make sure that you back up the registry before you modify it. Make sure that you know how to restore the registry if a problem occurs. For more information about how to back up, restore, and modify the registry, click the following article number to view the article in the Microsoft Knowledge Base:

256986 Description of the Microsoft Windows registry

After you install the Microsoft Windows Server 2003 Scalable Networking Pack or you apply hotfix 916508 on a computer that is running Microsoft Windows Server 2003, the computer sends a TCP reset packet in response to a NetBIOS over TCP/IP (NetBT) keep-alive packet. Therefore, network applications that use the NetBT keep-alive transmissions may not work correctly.



RESOLUTION
To resolve the problem, apply this hotfix on every server that is running Windows Server 2003 with the Scalable Networking Pack installed or that has hotfix 916508 applied. If both the server and the client computer meet these criteria, apply the hotfix to both computers.

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
To apply this hotfix, you must have Windows Server 2003 Service Pack 1 (SP1) installed. For more information about how to obtain the latest service pack for Windows Server 2003, 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

Restart requirement
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, x64-based versions


WORKAROUND
Warning Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by using another method. These problems might require that you reinstall the operating system. Microsoft cannot guarantee that these problems can be solved. Modify the registry at your own risk.

To work around this problem, disable NetBT keep-alive transmissions on every computer that sends these transmissions to computers that are running Windows Server 2003 with the Scalable Networking Pack installed or that have hotfix 916508 applied. For example, if a client computer is not running Windows Server 2003 with the Scalable Networking Pack installed and does not have the hotfix described in KB916508 installed, make this registry change only on the client computer. To do this, follow these steps:  Click Start, click Run, type Regedit, and then click OK. Locate and then click the following registry subkey:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\NetBT\Parameters

 In the right pane, right-click SessionKeepAlive, and then click Modify. In the Value data text box, type 0xFFFFFFF, and then click OK. Exit Registry Editor. Restart the computer.</ol>

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STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section. This problem was first corrected in Windows Server 2003 Service Pack 2.

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MORE INFORMATION
For more information about the Microsoft Windows Server 2003 Scalable Networking Pack, click the following article number to view the article in the Microsoft Knowledge Base:

912222 The Microsoft Windows Server 2003 Scalable Networking Pack release

Additional query words: nbt netbios keepalive nbss session tcp reset rst lotus notes rfc1001

Keywords: kbbug kbfix kbqfe kbpubtypekc kbexpertiseinter kbhotfixserver kbwinserv2003presp2fix kbwinserv2003sp2fix KB924325

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