Microsoft KB Archive/907524

= A memory leak occurs in the Lsass.exe process after you configure constrained delegation in Windows Server 2003 =

Article ID: 907524

Article Last Modified on 10/11/2007

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APPLIES TO


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

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SYMPTOMS
To forward Kerberos user credentials to other servers, you have configured a multiple-server environment for constrained delegation. A memory leak occurs in the Lsass.exe process on the back-end server.



CAUSE
The Kerberos tickets are not freed when they should be. The Microsoft Windows Server 2003-based Kerberos client does not correctly handle reference counting in this scenario. Therefore, the Lsass.exe process eventually uses the maximum amount of physical memory in Windows Server 2003.



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
No prerequisites are required.

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


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.



MORE INFORMATION
The hotfix must be installed on all servers that are at the back-end of the constrained delegation &quot;Single Sign-On&quot; authentication chain. Usually, these back-end servers are application servers and not domain controllers.

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

Additional query words: SSO SSO22KerbMap kbWinServ2003preSP2fix SAP KerbSSO

Keywords: kbbug kbfix kbqfe kbpubtypekc kbhotfixserver kbwinserv2003sp2fix KB907524

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