A leak occurs in the Netbt.sys file on Windows Server 2003 Terminal Server that has many NetBT connections

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Article ID: 916508 - View products that this article applies to.
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Symptoms

A leak occurs in the Netbt.sys file in the following Terminal Server environments:
  • Microsoft Windows Server 2003 Service Pack 1 (SP1) Terminal Server
  • Microsoft Windows Server 2003 Terminal Server
These environments have many NetBIOS over TCP/IP (NetBT) connections. The leak in the Netbt.sys file exhausts all available TCP endpoints for outgoing traffic. This problem occurs in Terminal Server environments with thousands of log on and log off transactions per day.

Note This problem may also affect servers that do not have Terminal Server enabled.

When you use the Tdimon.exe tool on Terminal Server, you receive an error message that resembles the following:
0xC000020A STATUS_ADDRESS_ALREADY_EXISTS
Note You must restart the computer after you receive this error.

When you run the nltest /sc_query command on Terminal Server, you receive an error message that resembles the following:
ERROR_NOT_ENOUGH_MEMORY
When you run the netdom query fsmo command on Terminal Server, you receive an error message that resembles the following:
RPC_SERVER_UNAVAILABLE
Note x64-based versions of Windows Server 2003 include Windows Server 2003 SP1.

Resolution

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

Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site:
http://support.microsoft.com/contactus/?ws=support
Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Prerequisites

To install this hotfix, you must have Windows Server 2003 Service Pack 1 (SP1) installed on your computer.

Restart requirement

You must restart your 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, Itanium-based versions
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File nameFile versionFile sizeDateTimePlatform
Netbt.sys5.2.3790.2659560,12813-Mar-200614:57IA-64
Windows Server 2003, x64-based versions
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File nameFile versionFile sizeDateTimePlatform
Netbt.sys5.2.3790.2659379,39213-Mar-200614:55x64
Windows Server 2003, x86-based versions
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File nameFile versionFile sizeDateTimePlatform
Netbt.sys5.2.3790.2659179,71214-Mar-200602:24x86

Status

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

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

Properties

Article ID: 916508 - Last Review: June 20, 2014 - Revision: 4.0
Applies to
  • Microsoft Windows Server 2003 Service Pack 1, when used with:
    • Microsoft Windows Server 2003, Datacenter Edition for Itanium-Based Systems
    • Microsoft Windows Server 2003, Enterprise Edition for Itanium-based Systems
    • Microsoft Windows Server 2003, Datacenter Edition (32-bit x86)
    • Microsoft Windows Server 2003, Enterprise Edition (32-bit x86)
    • Microsoft Windows Server 2003, Standard Edition (32-bit x86)
    • Microsoft Windows Server 2003, Web Edition
  • Microsoft Windows Server 2003, Datacenter x64 Edition
  • Microsoft Windows Server 2003, Enterprise x64 Edition
  • Microsoft Windows Server 2003, Standard x64 Edition
  • Microsoft Windows Server 2003, Datacenter Edition (32-bit x86)
  • Microsoft Windows Server 2003, Enterprise Edition (32-bit x86)
  • Microsoft Windows Server 2003, Standard Edition (32-bit x86)
  • Microsoft Windows Server 2003, Web Edition
Keywords: 
kbautohotfix kbwinserv2003sp2fix kbwinserv2003presp2fix kbbug kbfix kbqfe kbPubTypeKC KB916508

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