Symptoms

Assume that you have an IEEE 1394-compatible device that communicates with a Windows 7-based or Windows Server 2008 R2-based computer through an IEEE 1394 bus. However, the device does not work if the computer is not the IEEE 1394 bus manager.

Cause

This issue occurs because of an error in the Microsoft IEEE 1394 bus driver. When this error occurs, Windows never produces a write response packet for write requests that are initiated by other nodes on the IEEE 1394 bus.

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 Web site:

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)

For more information about how to obtain a Windows 7 or 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 and Windows Server 2008 R2 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:

    Version

    Product

    Milestone

    Service branch

    6.1.760
    0.16xxx

    Windows 7 and Windows Server 2008 R2

    RTM

    GDR

    6.1.760
    0.21xxx

    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, extremely important 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

1394ohci.sys

6.1.7600.16883

163,840

13-Sep-2011

03:08

x86

1394ohci.sys

6.1.7600.21052

164,864

13-Sep-2011

03:03

x86

1394ohci.sys

6.1.7601.17690

164,864

13-Sep-2011

02:51

x86

1394ohci.sys

6.1.7601.21817

164,864

13-Sep-2011

04:23

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

1394ohci.sys

6.1.7600.16883

228,864

13-Sep-2011

03:39

x64

1394ohci.sys

6.1.7600.21052

230,400

13-Sep-2011

03:33

x64

1394ohci.sys

6.1.7601.17690

229,888

13-Sep-2011

03:35

x64

1394ohci.sys

6.1.7601.21817

229,888

13-Sep-2011

05:58

x64

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

File name

File version

File size

Date

Time

Platform

1394ohci.sys

6.1.7600.16883

510,464

13-Sep-2011

02:44

IA-64

1394ohci.sys

6.1.7600.21052

514,560

13-Sep-2011

02:47

IA-64

1394ohci.sys

6.1.7601.17690

515,584

13-Sep-2011

02:36

IA-64

1394ohci.sys

6.1.7601.21817

515,584

13-Sep-2011

02:47

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 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

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

X86_1394.inf_31bf3856ad364e35_6.1.7600.16883_none_fb03b5ac673d4698.manifest

File version

Not Applicable

File size

3,572

Date (UTC)

13-Sep-2011

Time (UTC)

10:43

File name

X86_1394.inf_31bf3856ad364e35_6.1.7600.21052_none_fbac9a138043ac7a.manifest

File version

Not Applicable

File size

3,572

Date (UTC)

13-Sep-2011

Time (UTC)

10:43

File name

X86_1394.inf_31bf3856ad364e35_6.1.7601.17690_none_fcdc41e8646e8270.manifest

File version

Not Applicable

File size

3,572

Date (UTC)

13-Sep-2011

Time (UTC)

10:43

File name

X86_1394.inf_31bf3856ad364e35_6.1.7601.21817_none_fdc361ff7d44f13a.manifest

File version

Not Applicable

File size

3,572

Date (UTC)

13-Sep-2011

Time (UTC)

10:43

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

File name

Amd64_1394.inf_31bf3856ad364e35_6.1.7600.16883_none_572251301f9ab7ce.manifest

File version

Not Applicable

File size

3,576

Date (UTC)

13-Sep-2011

Time (UTC)

10:48

File name

Amd64_1394.inf_31bf3856ad364e35_6.1.7600.21052_none_57cb359738a11db0.manifest

File version

Not Applicable

File size

3,576

Date (UTC)

13-Sep-2011

Time (UTC)

10:48

File name

Amd64_1394.inf_31bf3856ad364e35_6.1.7601.17690_none_58fadd6c1ccbf3a6.manifest

File version

Not Applicable

File size

3,576

Date (UTC)

13-Sep-2011

Time (UTC)

10:48

File name

Amd64_1394.inf_31bf3856ad364e35_6.1.7601.21817_none_59e1fd8335a26270.manifest

File version

Not Applicable

File size

3,576

Date (UTC)

13-Sep-2011

Time (UTC)

10:48

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

File name

Ia64_1394.inf_31bf3856ad364e35_6.1.7600.16883_none_fb0559a2673b4f94.manifest

File version

Not Applicable

File size

3,574

Date (UTC)

13-Sep-2011

Time (UTC)

10:40

File name

Ia64_1394.inf_31bf3856ad364e35_6.1.7600.21052_none_fbae3e098041b576.manifest

File version

Not Applicable

File size

3,574

Date (UTC)

13-Sep-2011

Time (UTC)

10:40

File name

Ia64_1394.inf_31bf3856ad364e35_6.1.7601.17690_none_fcdde5de646c8b6c.manifest

File version

Not Applicable

File size

3,574

Date (UTC)

13-Sep-2011

Time (UTC)

10:40

File name

Ia64_1394.inf_31bf3856ad364e35_6.1.7601.21817_none_fdc505f57d42fa36.manifest

File version

Not Applicable

File size

3,574

Date (UTC)

13-Sep-2011

Time (UTC)

10:40

Need more help?

Expand your skills
Explore Training
Get new features first
Join Microsoft Insiders

Was this information helpful?

What affected your experience?

Thank you for your feedback!

×