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Symptoms

Consider the following scenario:

  • You install PCI-Express Fibre Channel host bus adapters (HBA) or converged network adapters (CNA) on a computer that is running Windows 7 or Windows Server 2008 R2.

  • You configure the computer to start from a hard disk drive that is connected to the HBAs.

  • You try to shut down or hibernate the computer.

In this scenario, you receive a Stop error that resembles the following:

STOP: 0x000000B8 ( parameter1 , parameter2 , parameter3 , parameter4 )

ATTEMPTED_SWITCH_FROM_DPC

Notes

  • The parameters in this Stop error vary, depending on the configuration of the computer.

  • Not all "0x000000B8" Stop errors are caused by this problem.

Cause

This issue occurs because the Pci.sys driver tries to perform an operation (wait, attach, or yield) that is not permitted during the Deferred Procedure Call (DPC) processing. Therefore, you receive the Stop error that is described in the "Symptoms" section.

Resolution

Hotfix information

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 website:

http://support.microsoft.com/contactus/?ws=supportNote 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, you must be running one of the following operating systems:

  • Windows 7

  • Windows 7 Service Pack 1 (SP1)

  • Windows Server 2008 R2

  • Windows Server 2008 R2 Service Pack 1 (SP1)

Registry information

To use the hotfix in this package, you do not have to make any changes to the registry.

Restart requirement

You may have to restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

File information

The global version of this hotfix installs files that have the attributes that are listed in the following tables. The dates and the times for these files are listed in Coordinated Universal Time (UTC). The dates and the times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and the times may change when you perform certain operations on the files.

Windows 7 and Windows Server 2008 R2 file information notes


Important Windows 7 hotfixes and Windows Server 2008 R2 hotfixes are included in the same packages. However, hotfixes on the Hotfix Request page are listed under both operating systems. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows 7/Windows Server 2008 R2" on the page. Always refer to the "Applies To" section in articles to determine the actual operating system that each hotfix applies to.

  • 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:

    Version

    Product

    Milestone

    Service branch

    6.1.760
    0.20xxx

    Windows 7 and Windows Server 2008 R2

    RTM

    LDR

    6.1.760
    1.17xxx

    Windows 7 and Windows Server 2008 R2

    SP1

    GDR

    6.1.760
    1.21xxx

    Windows 7 and Windows Server 2008 R2

    SP1

    LDR

  • GDR service branches contain only those fixes that are widely released to address widespread, critical issues. LDR service branches contain hotfixes in addition to widely released fixes.

  • The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately in the "Additional file information for Windows Server 2008 R2 and for Windows 7" section. MUM and MANIFEST files, and the associated security catalog (.cat) files, are extremely important to maintain the state of the updated components. The security catalog files, for which the attributes are not listed, are signed with a Microsoft digital signature.

For all supported x86-based versions of Windows 7

File name

File version

File size

Date

Time

Platform

Pci.sys

6.1.7600.20881

153,984

15-Jan-2011

05:42

x86

Termdd.sys

6.1.7600.20881

51,584

15-Jan-2011

05:42

x86

Volmgr.sys

6.1.7600.20881

53,120

15-Jan-2011

05:42

x86

Pci.sys

6.1.7601.21642

154,496

15-Jan-2011

05:41

x86

Termdd.sys

6.1.7601.17514

53,120

20-Nov-2010

12:30

x86

Volmgr.sys

6.1.7601.21642

53,120

15-Jan-2011

05:41

x86

For all supported x64-based versions of Windows 7 and of Windows Server 2008 R2

File name

File version

File size

Date

Time

Platform

Pci.sys

6.1.7600.20881

185,216

15-Jan-2011

06:26

x64

Termdd.sys

6.1.7600.20881

62,336

15-Jan-2011

06:26

x64

Volmgr.sys

6.1.7600.20881

71,552

15-Jan-2011

06:26

x64

Pci.sys

6.1.7601.21642

185,216

15-Jan-2011

06:29

x64

Termdd.sys

6.1.7601.17514

63,360

20-Nov-2010

13:33

x64

Volmgr.sys

6.1.7601.21642

70,528

15-Jan-2011

06:27

x64

For all supported IA-64-based versions of Windows Server 2008 R2

File name

File version

File size

Date

Time

Platform

Pci.sys

6.1.7600.20881

457,600

15-Jan-2011

05:24

IA-64

Termdd.sys

6.1.7600.20881

160,128

15-Jan-2011

05:25

IA-64

Volmgr.sys

6.1.7600.20881

164,224

15-Jan-2011

05:25

IA-64

Pci.sys

6.1.7601.21642

458,112

15-Jan-2011

05:19

IA-64

Termdd.sys

6.1.7601.17514

162,688

20-Nov-2010

10:33

IA-64

Volmgr.sys

6.1.7601.21642

164,224

15-Jan-2011

05:19

IA-64

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 Bug Check 0x000000B8, visit the following Microsoft Developer Network (MSDN) website:

General information about the Bug Check 0x000000B8
For more information, click the following article number to view the article in the Microsoft Knowledge Base:

2194018 "Stop 0xB8: ATTEMPTED_SWITCH_FROM_DPC" Error during shutdown or when entering Hibernation on Windows Server 2008 and Windows Server 2008 R2
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


The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, about the performance or reliability of these products.

Additional file information

Additional file information for Windows 7 and for Windows Server 2008 R2

Additional files for all supported x86-based versions of Windows 7

File name

Update.mum

File version

Not applicable

File size

2,331

Date (UTC)

15-Jan-2011

Time (UTC)

14:27

Platform

Not applicable

File name

X86_machine.inf_31bf3856ad364e35_6.1.7600.20881_none_ba6ee69a39259df5.manifest

File version

Not applicable

File size

9,456

Date (UTC)

15-Jan-2011

Time (UTC)

14:36

Platform

Not applicable

File name

X86_machine.inf_31bf3856ad364e35_6.1.7601.21642_none_bc81839a362ab374.manifest

File version

Not applicable

File size

9,456

Date (UTC)

15-Jan-2011

Time (UTC)

14:36

Platform

Not applicable

Additional files for all supported x64-based versions of Windows 7 and of Windows Server 2008 R2

File name

Amd64_machine.inf_31bf3856ad364e35_6.1.7600.20881_none_168d821df1830f2b.manifest

File version

Not applicable

File size

7,894

Date (UTC)

15-Jan-2011

Time (UTC)

14:38

Platform

Not applicable

File name

Amd64_machine.inf_31bf3856ad364e35_6.1.7601.21642_none_18a01f1dee8824aa.manifest

File version

Not applicable

File size

7,894

Date (UTC)

15-Jan-2011

Time (UTC)

14:38

Platform

Not applicable

File name

Update.mum

File version

Not applicable

File size

2,347

Date (UTC)

15-Jan-2011

Time (UTC)

14:27

Platform

Not applicable

Additional files for all supported IA-64-based versions of Windows Server 2008 R2

File name

Ia64_machine.inf_31bf3856ad364e35_6.1.7600.20881_none_ba708a903923a6f1.manifest

File version

Not applicable

File size

6,844

Date (UTC)

15-Jan-2011

Time (UTC)

14:27

Platform

Not applicable

File name

Ia64_machine.inf_31bf3856ad364e35_6.1.7601.21642_none_bc8327903628bc70.manifest

File version

Not applicable

File size

6,844

Date (UTC)

15-Jan-2011

Time (UTC)

14:27

Platform

Not applicable

File name

Update.mum

File version

Not applicable

File size

1,933

Date (UTC)

15-Jan-2011

Time (UTC)

14:27

Platform

Not applicable

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