Microsoft KB Archive/917257

= A Windows Server 2003 Service Pack 1 (SP1)-based computer seems to stop responding when the Lsass.exe process undergoes high memory and high CPU usage =

Article ID: 917257

Article Last Modified on 10/11/2007

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APPLIES TO

 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 SP1, 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)</li></ul>

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

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

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<div class="symptoms_section">

SYMPTOMS
When the Lsass.exe process undergoes high memory and high CPU usage on a Microsoft Windows Server 2003 Service Pack 1 (SP1)-based computer, the computer seems to stop responding. In this scenario, the Lsass.exe process also seems to stop responding to user authentication requests. You may notice that even though the computer seems to stop responding, you can still ping the computer.

<div class="cause_section">

CAUSE
This problem occurs because of a code defect in the NTLM authentication package.

<div class="resolution_section">

RESOLUTION
To resolve this problem, download the hotfix that is described in Microsoft Knowledge Base article 939268. For more information, click the following article number to view the article in the Microsoft Knowledge Base:

939268 A Windows Server 2003 Service Pack 1 or Service Pack 2-based computer seems to stop responding when the Lsass.exe process consumes lots of memory and uses 100% of the CPU

<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. This problem was first corrected in Windows Server 2003 Service Pack 2.

<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

Technical support for x64-based versions of Microsoft Windows
If your hardware came with a Microsoft Windows x64 edition already installed, your hardware manufacturer provides technical support and assistance for the Windows x64 edition. In this case, your hardware manufacturer provides support because a Windows x64 edition was included with your hardware. Your hardware manufacturer might have customized the Windows x64 edition installation by using unique components. Unique components might include specific device drivers or might include optional settings to maximize the performance of the hardware. Microsoft will provide reasonable-effort assistance if you need technical help with a Windows x64 edition. However, you might have to contact your manufacturer directly. Your manufacturer is best qualified to support the software that your manufacturer installed on the hardware. If you purchased a Windows x64 edition such as a Microsoft Windows Server 2003 x64 edition separately, contact Microsoft for technical support.

For product information about Microsoft Windows XP Professional x64 Edition, visit the following Microsoft Web site:

http://www.microsoft.com/windowsxp/64bit/default.mspx

For product information about x64-based versions of Microsoft Windows Server 2003, visit the following Microsoft Web site:

http://www.microsoft.com/windowsserver2003/64bit/x64/default.mspx

Additional query words: Winx64 Windowsx64 64bit 64-bit

Keywords: kbbug kbfix kbqfe kbpubtypekc kbwinserv2003sp1fix kbhotfixserver kbwinserv2003sp2fix KB917257

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