Some unrecoverable hardware errors are not reported as expected on a computer that runs a 32-bit version of Windows Vista or Windows Server 2008

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SYMPTOMS
Consider the following scenario:
  • You have a computer that runs a 32-bit version of Windows Vista or Windows Server 2008.
  • You enable the Machine Check Architecture (MCA) feature on the computer.
In this scenario, you expect to receive an error report when the processor detects an unrecoverable hardware error. However, some unrecoverable hardware errors are not reported as expected. Therefore, these hardware errors may remain undetected and may cause unpredictable behavior.
CAUSE
This problem occurs because the 32-bit versions of Windows Vista or Windows Server 2008 do not initialize the bank 0 control register.
RESOLUTION

Hotfix information

Important Windows Vista and Windows Server 2008 hotfixes are included in the same packages. However, only one of these products may be listed on the “Hotfix Request” page. To request the hotfix package that applies to both Windows Vista and Windows Server 2008, just select the product that is listed on the page.

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 the problem described in this article. 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: 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 apply this hotfix on a Windows Vista-based computer, you must have Windows Vista Service Pack 1 installed on the computer. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
935791 How to obtain the latest Windows Vista service pack
No prerequisites are required for Windows Server 2008-based computers.

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 Vista and Windows Server 2008 file information notes

  • The files that apply to a specific product, milestone (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table.
    VersionProductMilestoneService branch
    6.0.6000.16xxxWindows VistaRTMGDR
    6.0.6000.20xxxWindows VistaRTMLDR
    6.0.6001.18xxxWindows Vista SP1 and Windows Server 2008 SP1SP1GDR
    6.0.6001.22xxxWindows Vista SP1 and Windows Server 2008 SP1SP1LDR
  • Service Pack 1 is integrated into Windows Server 2008.
  • The MANIFEST files (.manifest) and MUM files (.mum) installed for each environment are listed separately. MUM and MANIFEST files, and the associated security catalog (.cat) files, are critical to maintaining the state of the updated component. The security catalog files (attributes not listed) are signed with a Microsoft digital signature.
For all supported x86-based versions of Windows Server 2008 and Windows Vista
File nameFile versionFile sizeDateTimePlatform
Pshed.dll6.0.6001.2229650,44028-Oct-200804:44x86
STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
MORE INFORMATION
For more information about software update terminology, 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 file information for Windows Server 2008

Additional files for all supported x86-based versions of Windows Server 2008 and Windows Vista

File namePackage_for_kb958860_client_1~31bf3856ad364e35~x86~~6.0.1.0.mum
File versionNot Applicable
File size1,367
Date (UTC)28-Oct-2008
Time (UTC)16:09
File namePackage_for_kb958860_client~31bf3856ad364e35~x86~~6.0.1.0.mum
File versionNot Applicable
File size1,431
Date (UTC)28-Oct-2008
Time (UTC)16:09
File namePackage_for_kb958860_sc_0~31bf3856ad364e35~x86~~6.0.1.0.mum
File versionNot Applicable
File size1,421
Date (UTC)28-Oct-2008
Time (UTC)16:09
File namePackage_for_kb958860_sc~31bf3856ad364e35~x86~~6.0.1.0.mum
File versionNot Applicable
File size1,423
Date (UTC)28-Oct-2008
Time (UTC)16:09
File namePackage_for_kb958860_server_0~31bf3856ad364e35~x86~~6.0.1.0.mum
File versionNot Applicable
File size1,425
Date (UTC)28-Oct-2008
Time (UTC)16:09
File namePackage_for_kb958860_server~31bf3856ad364e35~x86~~6.0.1.0.mum
File versionNot Applicable
File size1,431
Date (UTC)28-Oct-2008
Time (UTC)16:09
File namePackage_for_kb958860_winpesrv_0~31bf3856ad364e35~x86~~6.0.1.0.mum
File versionNot Applicable
File size1,422
Date (UTC)28-Oct-2008
Time (UTC)16:09
File namePackage_for_kb958860_winpesrv~31bf3856ad364e35~x86~~6.0.1.0.mum
File versionNot Applicable
File size1,429
Date (UTC)28-Oct-2008
Time (UTC)16:09
File nameX86_e4704e0caa215b01aa054596814b0478_31bf3856ad364e35_6.0.6001.22296_none_d326516fb4adfcb9.manifest
File versionNot Applicable
File size693
Date (UTC)28-Oct-2008
Time (UTC)16:09
File nameX86_microsoft-windows-pshed_31bf3856ad364e35_6.0.6001.22296_none_5c2134714675bf88.manifest
File versionNot Applicable
File size14,768
Date (UTC)28-Oct-2008
Time (UTC)05:20
MC0_CTL BIOS
Properties

Article ID: 958860 - Last Review: 01/16/2015 10:57:52 - Revision: 2.0

  • Windows Vista Ultimate
  • Windows Vista Home Premium
  • Windows Vista Home Basic
  • Windows Vista Enterprise
  • Windows Vista Business
  • Windows Vista Service Pack 1
  • Windows Server 2008 Standard
  • Windows Server 2008 Enterprise
  • Windows Server 2008 Datacenter
  • Windows Server 2008 Datacenter without Hyper-V
  • Windows Server 2008 Enterprise without Hyper-V
  • Windows Server 2008 Standard without Hyper-V
  • Windows Web Server 2008
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