Microsoft KB Archive/926261

= Informational errors are not logged when you use the EnableCMC registry value to disable the corrected machine check in Windows Server 2003 =

Article ID: 926261

Article Last Modified on 10/11/2007

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APPLIES TO


 * Microsoft Windows XP Professional x64 Edition
 * 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 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
 * Microsoft Windows Server 2003, Standard Edition (32-bit x86)
 * Microsoft Windows Server 2003, Web Edition

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SYMPTOMS
You use the EnableCMC registry value to disable the corrected machine check on a Microsoft Windows Server 2003-based computer, as described in Microsoft Knowledge Base article 912310. However, after you do this, informational errors that do not require user action are not logged. Additionally, Single Bit Correction (SBC) logging is disabled.



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
After you install this hotfix, Windows reports to you only when Windows detects a hardware error. For example, you may see an indicator, such as a yellow exclamation mark, in the Notification area. Windows does not report to you when a machine log is generated if the machine log is only informational.

Prerequisites
To apply this hotfix, the computer must be running one of the following operating systems:
 * A 32-bit version of Windows Server 2003 with Service Pack 1 (SP1)
 * An Itanium-based version of Windows Server 2003 with SP1
 * An x64-based version of Windows Server 2003
 * Microsoft Windows XP Professional x64 Edition

Restart requirement
You must restart your computer after you apply this hotfix.

Hotfix replacement information
This hotfix does not replace a previously released hotfix.

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


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
Machine check error reporting is the mechanism that is used by the processor to inform the operating system about hardware errors. The machine check handler in the operating system logs details about these errors together with related information. Machine check entries in the System log are very important indicators of the health of the system and are used by Online Crash Analysis.

Typically, a yellow exclamation mark, or &quot;bang,&quot; appears in the Notification area when any machine check error occurs. This includes informational errors that are not actual hardware errors. Some of these errors may indicate that a user action or intervention is required. However, other errors do not necessarily indicate that a user action or intervention is required. For more information about how to use the EnableCMC registry value to disable the corrected machine check on a Windows Server 2003-based computer, click the following article number to view the article in the Microsoft Knowledge Base:

912310 How to disable the corrected machine check on a Microsoft Windows Server 2003-based computer

For more information, click the following article numbers to view the articles in the Microsoft Knowledge Base:

816915 New file naming schema for Microsoft Windows software update packages

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: Machine check errors MCA logging hardware Winx64 Windowsx64 64bit 64-bit

Keywords: kbfix kbqfe kbprb kbexpertiseinter kbhotfixserver kbwinserv2003sp2fix KB926261

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