Microsoft KB Archive/829993

= Memory Leak Occurs in the Lsass.exe Process on a Windows Server 2003-Based Domain Controller =

Article ID: 829993

Article Last Modified on 7/24/2007

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APPLIES TO


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

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SYMPTOMS
On a Microsoft Windows Server 2003-based domain controller, the memory usage may continue to increase, and therefore, you may have to periodically restart the server. If you use System Monitor to view the Local Security Authority Service (Lsass.exe) process, you see that the memory usage for the Lsass.exe process continues to grow. (To monitor this process, see the Process\Private Bytes and the Process\Virtual Bytes performance counters.)



CAUSE
This problem occurs because of a memory leak that is associated with the Lsass.exe process. The rate of the leak depends on the number of groups and of group members that exist in the domain, and on the number of group-related queries.



Hotfix Information
A supported hotfix is now 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 service pack that contains this hotfix.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

http://go.microsoft.com/?linkid=6294451

Note If additional issues occur or 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. To create a separate service request, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Prerequisites
No prerequisites are required.

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) 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 tool in Control Panel.   Date         Time   Version      Size       File name   Platform -  01-Oct-2003  18:55  5.2.3790.89    463,872  Samsrv.dll  x86 01-Oct-2003 18:55  5.2.3790.89  1,034,240  Samsrv.dll  IA-64



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

Keywords: kbhotfixserver kbqfe kbqfe kbwinserv2003presp1fix kbfix kbbug KB829993

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