Symptoms

Assume that you run the Common Scenario Stress with IO test on a Windows 7-based computer on which Windows Virtual PC and Windows Logo Kit are installed. In this scenario, the computer may crash. Additionally, you receive a Stop error message that resembles the following:

STOP 0x000000C4 (parameter1, parameter2, parameter3, parameter4)
DRIVER_VERIFIER_DETECTED_VIOLATION


Notes

  • This issue also occurs if you manually enable the Driver Verifier for all USB drivers and then disable all USB host controllers by using Device Manager.

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

  • Not all 0x000000C4 Stop errors are caused by this problem.

Cause

This memory leak issue occurs because Windows Virtual PC uses a USB Redirection Policy Manager driver (Usbrpm.sys). This driver leaks a small amount of memory under certain conditions.

Note The amount of leaked memory when the USB port driver unloads is very small and does not cause a problem under ordinary operations. However, when you use Driver Verifier, the Stop error occurs.

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)

For more information about how to obtain a Windows 7 or a Windows Server 2008 R2 service pack, click the following article number to view the article in the Microsoft Knowledge Base:

976932 Information about Service Pack 1 for Windows 7 and for Windows Server 2008 R2

Registry information

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

Restart requirement

You must 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 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, SR_Level (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table.

    Version

    Product

    SR_Level

    Service branch

    6.1.760
    0.
    16xxx

    Windows 7

    RTM

    GDR

    6.1.760
    0.
    20xxx

    Windows 7

    RTM

    LDR

    6.1.760
    1.
    17xxx

    Windows 7

    SP1

    GDR

    6.1.760
    1.
    21xxx

    Windows 7

    SP1

    LDR

  • 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 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

Usbrpm.sys

6.1.7600.16784

26,112

19-Mar-2011

05:31

Usbrpm.sys

6.1.7600.20928

26,112

19-Mar-2011

05:42

Usbrpm.sys

6.1.7601.17582

26,112

19-Mar-2011

05:24

Usbrpm.sys

6.1.7601.21687

26,112

19-Mar-2011

05:17

For all supported x64-based versions of Windows 7

File name

File version

File size

Date

Time

Usbrpm.sys

6.1.7600.16784

31,744

19-Mar-2011

06:01

Usbrpm.sys

6.1.7600.20928

31,744

19-Mar-2011

06:20

Usbrpm.sys

6.1.7601.17582

31,744

19-Mar-2011

06:09

Usbrpm.sys

6.1.7601.21687

31,744

19-Mar-2011

06:23

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

For more information about Driver Verifier, click the following link to view the article:

General information about Driver Verifier

Additional file information

Additional file information for Windows 7

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

File name

X86_a3a532394e7c78663e1157a59bdec080_31bf3856ad364e35_6.1.7601.21687_none_67b7be86becefa8e.manifest

File version

Not applicable

File size

705

Date (UTC)

21-Mar-2011

Time (UTC)

17:20

File name

X86_cb7abcb3c722b33b745ad71e6cdf5873_31bf3856ad364e35_6.1.7600.20928_none_ae5b05c60c2f7d03.manifest

File version

Not applicable

File size

705

Date (UTC)

21-Mar-2011

Time (UTC)

17:20

File name

X86_e647d84c21650a09cdfd374438ab09a8_31bf3856ad364e35_6.1.7601.17582_none_4418f36c22d4c8a9.manifest

File version

Not applicable

File size

705

Date (UTC)

21-Mar-2011

Time (UTC)

17:20

File name

X86_f97c01df6cff67332a1fcfd2e6817de7_31bf3856ad364e35_6.1.7600.16784_none_dfa5e9342171e793.manifest

File version

Not applicable

File size

705

Date (UTC)

21-Mar-2011

Time (UTC)

17:20

File name

X86_microsoft-windows-virtualpc-usb-rpm_31bf3856ad364e35_6.1.7600.16784_none_370d689ad7093b1f.manifest

File version

Not applicable

File size

2,387

Date (UTC)

19-Mar-2011

Time (UTC)

07:15

File name

X86_microsoft-windows-virtualpc-usb-rpm_31bf3856ad364e35_6.1.7600.20928_none_37dbe7fbeff295c6.manifest

File version

Not applicable

File size

2,387

Date (UTC)

19-Mar-2011

Time (UTC)

07:23

File name

X86_microsoft-windows-virtualpc-usb-rpm_31bf3856ad364e35_6.1.7601.17582_none_38f1c50cd431745d.manifest

File version

Not applicable

File size

2,387

Date (UTC)

19-Mar-2011

Time (UTC)

06:55

File name

X86_microsoft-windows-virtualpc-usb-rpm_31bf3856ad364e35_6.1.7601.21687_none_39806349ed4a92da.manifest

File version

Not applicable

File size

2,387

Date (UTC)

19-Mar-2011

Time (UTC)

07:22

Additional files for all supported x64-based versions of Windows 7

File name

Amd64_041b6cade4b029d4049f12df5ad59416_31bf3856ad364e35_6.1.7601.21687_none_5f57057328fba2ac.manifest

File version

Not applicable

File size

709

Date (UTC)

21-Mar-2011

Time (UTC)

17:20

File name

Amd64_6cefd0d5d9b918531ee3475c714bf6a8_31bf3856ad364e35_6.1.7601.17582_none_2e3c82925fa5a71b.manifest

File version

Not applicable

File size

709

Date (UTC)

21-Mar-2011

Time (UTC)

17:20

File name

Amd64_c4f3e9baa31fb98574239877aaac152c_31bf3856ad364e35_6.1.7600.16784_none_ea8f3626ba7df0cd.manifest

File version

Not applicable

File size

709

Date (UTC)

21-Mar-2011

Time (UTC)

17:20

File name

Amd64_ded4402151868ac32809c2054da83f7e_31bf3856ad364e35_6.1.7600.20928_none_5a251a155f963006.manifest

File version

Not applicable

File size

709

Date (UTC)

21-Mar-2011

Time (UTC)

17:20

File name

Amd64_microsoft-windows-virtualpc-usb-rpm_31bf3856ad364e35_6.1.7600.16784_none_932c041e8f66ac55.manifest

File version

Not applicable

File size

2,391

Date (UTC)

19-Mar-2011

Time (UTC)

08:07

File name

Amd64_microsoft-windows-virtualpc-usb-rpm_31bf3856ad364e35_6.1.7600.20928_none_93fa837fa85006fc.manifest

File version

Not applicable

File size

2,391

Date (UTC)

19-Mar-2011

Time (UTC)

08:21

File name

Amd64_microsoft-windows-virtualpc-usb-rpm_31bf3856ad364e35_6.1.7601.17582_none_951060908c8ee593.manifest

File version

Not applicable

File size

2,391

Date (UTC)

19-Mar-2011

Time (UTC)

08:06

File name

Amd64_microsoft-windows-virtualpc-usb-rpm_31bf3856ad364e35_6.1.7601.21687_none_959efecda5a80410.manifest

File version

Not applicable

File size

2,391

Date (UTC)

19-Mar-2011

Time (UTC)

08:16

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