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The system becomes unresponsive when you hot-unplug a device from the PCI Express interface on a computer that is running Windows Vista or Windows Server 2008

This article has been archived. It is offered "as is" and will no longer be updated.
On a computer that is running Windows Vista or Windows Server 2008, a Peripheral Component Interconnect (PCI) Express interface is available that supports hot-plugging. However, when you hot-unplug a device from the PCI Express interface, the system becomes unresponsive.

Additionally, a CPU internal error (IERR) occurs. If the computer is equipped with an IERR LED, the IERR LED flashes.

Note An IERR is an unrecoverable internal CPU error. Processors do not execute any instructions until the system restarts.

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.


To apply this hotfix on a Windows Vista-based computer, you must have Windows Vista Service Pack 1 (SP1) installed.

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 the MUM files (.mum) that are 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 of Windows Vista
File nameFile versionFile sizeDateTimePlatform
Machine.infNot Applicable288,44407-Feb-200901:36Not Applicable
Swenum.sys6.0.6001.2237113,66407-Feb-200906:56Not Applicable
For all supported x64-based versions of Windows Server 2008 and of Windows Vista
File nameFile versionFile sizeDateTimePlatform
Machine.infNot Applicable276,56407-Feb-200901:41Not Applicable
For all supported Itanium-based versions of Windows Server 2008
File nameFile versionFile sizeDateTimePlatform
Machine.infNot Applicable270,75807-Feb-200900:42Not Applicable
Swenum.sys6.0.6001.2237117,64807-Feb-200906:17Not Applicable
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 of Windows Vista
File nameFile versionFile sizeDateTimePlatform
Package_for_kb967575_client_1~31bf3856ad364e35~x86~~ Applicable1,36707-Feb-200922:13Not Applicable
Package_for_kb967575_client~31bf3856ad364e35~x86~~ Applicable1,43107-Feb-200922:13Not Applicable
Package_for_kb967575_sc_0~31bf3856ad364e35~x86~~ Applicable1,42107-Feb-200922:13Not Applicable
Package_for_kb967575_sc~31bf3856ad364e35~x86~~ Applicable1,42307-Feb-200922:13Not Applicable
Package_for_kb967575_server_0~31bf3856ad364e35~x86~~ Applicable1,42507-Feb-200922:13Not Applicable
Package_for_kb967575_server~31bf3856ad364e35~x86~~ Applicable1,43107-Feb-200922:13Not Applicable
Package_for_kb967575_winpesrv_0~31bf3856ad364e35~x86~~ Applicable1,42207-Feb-200922:13Not Applicable
Package_for_kb967575_winpesrv~31bf3856ad364e35~x86~~ Applicable1,42907-Feb-200922:13Not Applicable
X86_machine.inf_31bf3856ad364e35_6.0.6001.22371_none_ba51dea8d8065080.manifestNot Applicable9,97407-Feb-200922:15Not Applicable
Additional files for all supported x64-based versions of Windows Server 2008 and of Windows Vista
File nameFile versionFile sizeDateTimePlatform
Amd64_machine.inf_31bf3856ad364e35_6.0.6001.22371_none_16707a2c9063c1b6.manifestNot Applicable8,24207-Feb-200922:17Not Applicable
Package_for_kb967575_client_1~31bf3856ad364e35~amd64~~ Applicable1,37507-Feb-200922:13Not Applicable
Package_for_kb967575_client~31bf3856ad364e35~amd64~~ Applicable1,43907-Feb-200922:13Not Applicable
Package_for_kb967575_sc_0~31bf3856ad364e35~amd64~~ Applicable1,42907-Feb-200922:13Not Applicable
Package_for_kb967575_sc~31bf3856ad364e35~amd64~~ Applicable1,43107-Feb-200922:13Not Applicable
Package_for_kb967575_server_0~31bf3856ad364e35~amd64~~ Applicable1,43307-Feb-200922:13Not Applicable
Package_for_kb967575_server~31bf3856ad364e35~amd64~~ Applicable1,43907-Feb-200922:13Not Applicable
Package_for_kb967575_winpesrv_0~31bf3856ad364e35~amd64~~ Applicable1,43007-Feb-200922:13Not Applicable
Package_for_kb967575_winpesrv~31bf3856ad364e35~amd64~~ Applicable1,43707-Feb-200922:13Not Applicable
Additional files for all supported Itanium-based versions of Windows Server 2008
File nameFile versionFile sizeDateTimePlatform
Ia64_machine.inf_31bf3856ad364e35_6.0.6001.22371_none_ba53829ed804597c.manifestNot Applicable7,08107-Feb-200922:13Not Applicable
Package_for_kb967575_sc_0~31bf3856ad364e35~ia64~~ Applicable1,42507-Feb-200922:13Not Applicable
Package_for_kb967575_sc~31bf3856ad364e35~ia64~~ Applicable1,42607-Feb-200922:13Not Applicable
Package_for_kb967575_server_0~31bf3856ad364e35~ia64~~ Applicable1,42907-Feb-200922:13Not Applicable
Package_for_kb967575_server~31bf3856ad364e35~ia64~~ Applicable1,43407-Feb-200922:13Not Applicable
Package_for_kb967575_winpesrv_0~31bf3856ad364e35~ia64~~ Applicable1,42607-Feb-200922:13Not Applicable
Package_for_kb967575_winpesrv~31bf3856ad364e35~ia64~~ Applicable1,43307-Feb-200922:13Not Applicable
hang upon hot removal

Article ID: 967575 - Last Review: 01/16/2015 10:27:34 - Revision: 3.0

Windows Vista Home Premium, Windows Vista Home Basic, Windows Vista Enterprise, Windows Vista Business, Windows Vista Ultimate, Windows Vista Business 64-bit Edition, Windows Vista Ultimate 64-bit Edition, Windows Vista Home Premium 64-bit Edition, Windows Vista Home Basic 64-bit Edition, Windows Vista Enterprise 64-bit Edition, 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 for Itanium-Based Systems, Windows Server 2008 Standard without Hyper-V, Windows Web Server 2008

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