Symptoms

Consider the following scenario:

  • You have a computer that is running an x64-based version of Windows 7 or Windows Server 2008 R2.

  • You run some x86-based applications or services on the computer.

  • You install updates through Windows update without first stopping the x86-based applications or services.┬áThese updates may include Windows 7 Service Pack 1 (SP1) or Windows Server 2008 R2 Service Pack 1 (SP1).

In this scenario, an error may occur in the x86-based applications or services, which causes the application or service to stop unexpectedly. This behavior may cause data loss. Additionally, an event error message that resembles the following is logged in the application event log:

Resolution

Update information

Updates to the Windows 7 and Windows Server 2008 R2 installation software are included in this update. The installation software is the component that handles the installation and the removal of software updates, language packs, optional Windows features, and service packs. This update is necessary to successfully install and to remove any service packs to all versions of Windows 7 and on Windows Server 2008 R2.

Prerequisites

There are no prerequisites for installing this update.

Registry information

To use the update 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 update.

Update replacement information

This update does not replace a previously released update.

Download information

The following files are available for download from the Microsoft Download Center:

Download Download the Update for Windows 7 for x64-based Systems (KB2487426) package now.

Download Download the Update for Windows Server 2008 R2 x64 Edition (KB2487426) package now.

Download Download the Update for Windows Server 2008 R2 for Itanium-based Systems (KB2487426) package now.

Release Date: February 8, 2011

For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:

119591 How to obtain Microsoft support files from online services Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file.

File information

The global version of this update 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

    6.1.7600.16xxx

    Windows 7 and Windows Server 2008 R2

    RTM

    GDR

    6.1.7600.20xxx

    Windows 7 and Windows Server 2008 R2

    RTM

    LDR

    6.1.7601.17xxx

    Windows 7 and Windows Server 2008 R2

    SP1

    GDR

    6.1.7601.21xxx

    Windows 7 and Windows Server 2008 R2

    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 and for Windows Server 2008 R2" 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 x64-based versions of Windows 7 and of Windows Server 2008 R2

File name

File version

File size

Date

Time

Platform

Winsrv.dll

6.1.7600.16723

214,016

21-Dec-2010

06:16

x64

Winsrv.dll

6.1.7600.20864

214,016

22-Dec-2010

07:15

x64

Winsrv.dll

6.1.7601.17527

214,016

17-Dec-2010

11:42

x64

Winsrv.dll

6.1.7601.21624

214,016

18-Dec-2010

08:52

x64

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

File name

File version

File size

Date

Time

Platform

Winsrv.dll

6.1.7600.16723

338,944

21-Dec-2010

05:24

IA-64

Winsrv.dll

6.1.7600.20864

338,944

22-Dec-2010

06:28

IA-64

Winsrv.dll

6.1.7601.17527

338,944

17-Dec-2010

06:28

IA-64

Winsrv.dll

6.1.7601.21624

338,944

18-Dec-2010

09:35

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 x64-based versions of Windows 7 and of Windows Server 2008 R2

File name

Amd64_00542f1830c5d75804a873c7dd1a84f7_31bf3856ad364e35_6.1.7601.17527_none_6dde84010e54b7ef.manifest

File version

Not applicable

File size

698

Date (UTC)

22-Dec-2010

Time (UTC)

21:36

Platform

Not applicable

File name

Amd64_13a08d46847686397f7a7dd5062a708b_31bf3856ad364e35_6.1.7600.16723_none_1d2251fe5fca3cd3.manifest

File version

Not applicable

File size

1,038

Date (UTC)

22-Dec-2010

Time (UTC)

21:36

Platform

Not applicable

File name

Amd64_297854f7c06aaa192f3b109729f4b3c0_31bf3856ad364e35_6.1.7601.21624_none_98f73838748c3e6a.manifest

File version

Not applicable

File size

698

Date (UTC)

22-Dec-2010

Time (UTC)

21:36

Platform

Not applicable

File name

Amd64_2ffdd84497473dcd799f80e50d7d6cb8_31bf3856ad364e35_6.1.7600.16723_none_23ac67b81c945f20.manifest

File version

Not applicable

File size

698

Date (UTC)

22-Dec-2010

Time (UTC)

21:36

Platform

Not applicable

File name

Amd64_323d085b0a209cdcbf4d76761e60de9f_31bf3856ad364e35_6.1.7601.17527_none_ca244195df61747b.manifest

File version

Not applicable

File size

1,038

Date (UTC)

22-Dec-2010

Time (UTC)

21:36

Platform

Not applicable

File name

Amd64_4aaea486f32fb09e19e400b9b249ecd5_31bf3856ad364e35_6.1.7600.16723_none_dc144d20cd78ccfd.manifest

File version

Not applicable

File size

698

Date (UTC)

22-Dec-2010

Time (UTC)

21:36

Platform

Not applicable

File name

Amd64_4d834cbaaa93e3aee4cf09a53e3b3444_31bf3856ad364e35_6.1.7601.17527_none_76f0fa39faf5e218.manifest

File version

Not applicable

File size

698

Date (UTC)

22-Dec-2010

Time (UTC)

21:36

Platform

Not applicable

File name

Amd64_615b87b4dab56bfb19ae73f5f81c8bc1_31bf3856ad364e35_6.1.7600.20864_none_17b340bcd67d5c53.manifest

File version

Not applicable

File size

698

Date (UTC)

22-Dec-2010

Time (UTC)

21:36

Platform

Not applicable

File name

Amd64_7161b397d647b7e73125b8f433eb0e9a_31bf3856ad364e35_6.1.7601.21624_none_5eb4c1e1801903ee.manifest

File version

Not applicable

File size

1,038

Date (UTC)

22-Dec-2010

Time (UTC)

21:36

Platform

Not applicable

File name

Amd64_c3efaf148cd3f8e865e982679b55f7aa_31bf3856ad364e35_6.1.7601.21624_none_efdd0d86ada36771.manifest

File version

Not applicable

File size

698

Date (UTC)

22-Dec-2010

Time (UTC)

21:36

Platform

Not applicable

File name

Amd64_c4d2d53886f7f887b22859cb3a319205_31bf3856ad364e35_6.1.7600.20864_none_7e9f1d827808007f.manifest

File version

Not applicable

File size

698

Date (UTC)

22-Dec-2010

Time (UTC)

21:36

Platform

Not applicable

File name

Amd64_c6e8c0ca77bbf35b61806610eb8a6800_31bf3856ad364e35_6.1.7600.20864_none_e0559f79efaadaf6.manifest

File version

Not applicable

File size

1,038

Date (UTC)

22-Dec-2010

Time (UTC)

21:36

Platform

Not applicable

File name

Amd64_microsoft-windows-winsrv_31bf3856ad364e35_6.1.7600.16723_none_12b26ed5b5d7569a.manifest

File version

Not applicable

File size

7,086

Date (UTC)

21-Dec-2010

Time (UTC)

07:00

Platform

Not applicable

File name

Amd64_microsoft-windows-winsrv_31bf3856ad364e35_6.1.7600.20864_none_1311cc3acf147f7f.manifest

File version

Not applicable

File size

7,086

Date (UTC)

22-Dec-2010

Time (UTC)

08:01

Platform

Not applicable

File name

Amd64_microsoft-windows-winsrv_31bf3856ad364e35_6.1.7601.17527_none_149ccd03b2fa27e2.manifest

File version

Not applicable

File size

7,086

Date (UTC)

17-Dec-2010

Time (UTC)

12:25

Platform

Not applicable

File name

Amd64_microsoft-windows-winsrv_31bf3856ad364e35_6.1.7601.21624_none_152368f0cc1a7ba7.manifest

File version

Not applicable

File size

7,086

Date (UTC)

18-Dec-2010

Time (UTC)

09:26

Platform

Not applicable

File name

Update-bf.mum

File version

Not applicable

File size

3,981

Date (UTC)

22-Dec-2010

Time (UTC)

21:37

Platform

Not applicable

File name

Wow64_microsoft-windows-winsrv_31bf3856ad364e35_6.1.7600.16723_none_1d071927ea381895.manifest

File version

Not applicable

File size

1,300

Date (UTC)

21-Dec-2010

Time (UTC)

06:06

Platform

Not applicable

File name

Wow64_microsoft-windows-winsrv_31bf3856ad364e35_6.1.7600.20864_none_1d66768d0375417a.manifest

File version

Not applicable

File size

1,300

Date (UTC)

22-Dec-2010

Time (UTC)

06:57

Platform

Not applicable

File name

Wow64_microsoft-windows-winsrv_31bf3856ad364e35_6.1.7601.17527_none_1ef17755e75ae9dd.manifest

File version

Not applicable

File size

1,300

Date (UTC)

17-Dec-2010

Time (UTC)

07:41

Platform

Not applicable

File name

Wow64_microsoft-windows-winsrv_31bf3856ad364e35_6.1.7601.21624_none_1f781343007b3da2.manifest

File version

Not applicable

File size

1,300

Date (UTC)

18-Dec-2010

Time (UTC)

08:23

Platform

Not applicable

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

File name

Ia64_00542f1830c5d75804a873c7dd1a84f7_31bf3856ad364e35_6.1.7601.17527_none_11c18c7355f54fb5.manifest

File version

Not Applicable

File size

697

Date (UTC)

22-Dec-2010

Time (UTC)

21:36

File name

Ia64_16348802efb95c0fbb4661615f07d898_31bf3856ad364e35_6.1.7601.21624_none_321d46982bf11ed4.manifest

File version

Not Applicable

File size

696

Date (UTC)

22-Dec-2010

Time (UTC)

21:36

File name

Ia64_297854f7c06aaa192f3b109729f4b3c0_31bf3856ad364e35_6.1.7601.21624_none_3cda40aabc2cd630.manifest

File version

Not Applicable

File size

697

Date (UTC)

22-Dec-2010

Time (UTC)

21:36

File name

Ia64_2ffdd84497473dcd799f80e50d7d6cb8_31bf3856ad364e35_6.1.7600.16723_none_c78f702a6434f6e6.manifest

File version

Not Applicable

File size

697

Date (UTC)

22-Dec-2010

Time (UTC)

21:36

File name

Ia64_382c889459e05995f5cc76ba1802fdab_31bf3856ad364e35_6.1.7600.16723_none_aa0d6498cf22bc9b.manifest

File version

Not Applicable

File size

696

Date (UTC)

22-Dec-2010

Time (UTC)

21:36

File name

Ia64_4580d2cd534318e3b72b307f77432c57_31bf3856ad364e35_6.1.7600.20864_none_ff0dc208091f145e.manifest

File version

Not Applicable

File size

696

Date (UTC)

22-Dec-2010

Time (UTC)

21:36

File name

Ia64_615b87b4dab56bfb19ae73f5f81c8bc1_31bf3856ad364e35_6.1.7600.20864_none_bb96492f1e1df419.manifest

File version

Not Applicable

File size

697

Date (UTC)

22-Dec-2010

Time (UTC)

21:36

File name

Ia64_ada28c942152588038ecc1ad6f39c234_31bf3856ad364e35_6.1.7601.17527_none_5e7f7bac95398c21.manifest

File version

Not Applicable

File size

696

Date (UTC)

22-Dec-2010

Time (UTC)

21:36

File name

Ia64_microsoft-windows-winsrv_31bf3856ad364e35_6.1.7600.16723_none_b6957747fd77ee60.manifest

File version

Not Applicable

File size

7,084

Date (UTC)

21-Dec-2010

Time (UTC)

07:40

File name

Ia64_microsoft-windows-winsrv_31bf3856ad364e35_6.1.7600.20864_none_b6f4d4ad16b51745.manifest

File version

Not Applicable

File size

7,084

Date (UTC)

22-Dec-2010

Time (UTC)

08:02

File name

Ia64_microsoft-windows-winsrv_31bf3856ad364e35_6.1.7601.17527_none_b87fd575fa9abfa8.manifest

File version

Not Applicable

File size

7,084

Date (UTC)

17-Dec-2010

Time (UTC)

08:22

File name

Ia64_microsoft-windows-winsrv_31bf3856ad364e35_6.1.7601.21624_none_b906716313bb136d.manifest

File version

Not Applicable

File size

7,084

Date (UTC)

18-Dec-2010

Time (UTC)

09:58

File name

Package_1_for_kb2487426_bf~31bf3856ad364e35~ia64~~6.1.1.0.mum

File version

Not Applicable

File size

1,786

Date (UTC)

22-Dec-2010

Time (UTC)

21:36

File name

Package_1_for_kb2487426~31bf3856ad364e35~ia64~~6.1.1.0.mum

File version

Not Applicable

File size

3,846

Date (UTC)

22-Dec-2010

Time (UTC)

21:36

File name

Package_2_for_kb2487426_bf~31bf3856ad364e35~ia64~~6.1.1.0.mum

File version

Not Applicable

File size

2,002

Date (UTC)

22-Dec-2010

Time (UTC)

21:36

File name

Package_2_for_kb2487426~31bf3856ad364e35~ia64~~6.1.1.0.mum

File version

Not Applicable

File size

4,061

Date (UTC)

22-Dec-2010

Time (UTC)

21:36

File name

Package_3_for_kb2487426_bf~31bf3856ad364e35~ia64~~6.1.1.0.mum

File version

Not Applicable

File size

1,981

Date (UTC)

22-Dec-2010

Time (UTC)

21:36

File name

Package_3_for_kb2487426~31bf3856ad364e35~ia64~~6.1.1.0.mum

File version

Not Applicable

File size

3,643

Date (UTC)

22-Dec-2010

Time (UTC)

21:36

File name

Package_4_for_kb2487426_bf~31bf3856ad364e35~ia64~~6.1.1.0.mum

File version

Not Applicable

File size

2,197

Date (UTC)

22-Dec-2010

Time (UTC)

21:36

File name

Package_4_for_kb2487426~31bf3856ad364e35~ia64~~6.1.1.0.mum

File version

Not Applicable

File size

3,865

Date (UTC)

22-Dec-2010

Time (UTC)

21:36

File name

Package_for_kb2487426_rtm_bf~31bf3856ad364e35~ia64~~6.1.1.0.mum

File version

Not Applicable

File size

1,931

Date (UTC)

22-Dec-2010

Time (UTC)

21:36

File name

Package_for_kb2487426_rtm~31bf3856ad364e35~ia64~~6.1.1.0.mum

File version

Not Applicable

File size

1,968

Date (UTC)

22-Dec-2010

Time (UTC)

21:36

File name

Package_for_kb2487426_sp1_bf~31bf3856ad364e35~ia64~~6.1.1.0.mum

File version

Not Applicable

File size

1,692

Date (UTC)

22-Dec-2010

Time (UTC)

21:36

File name

Package_for_kb2487426_sp1~31bf3856ad364e35~ia64~~6.1.1.0.mum

File version

Not Applicable

File size

1,725

Date (UTC)

22-Dec-2010

Time (UTC)

21:36

File name

Update-bf.mum

File version

Not Applicable

File size

2,127

Date (UTC)

22-Dec-2010

Time (UTC)

21:36

File name

Wow64_microsoft-windows-winsrv_31bf3856ad364e35_6.1.7600.16723_none_1d071927ea381895.manifest

File version

Not Applicable

File size

1,300

Date (UTC)

21-Dec-2010

Time (UTC)

06:06

File name

Wow64_microsoft-windows-winsrv_31bf3856ad364e35_6.1.7600.20864_none_1d66768d0375417a.manifest

File version

Not Applicable

File size

1,300

Date (UTC)

22-Dec-2010

Time (UTC)

06:57

File name

Wow64_microsoft-windows-winsrv_31bf3856ad364e35_6.1.7601.17527_none_1ef17755e75ae9dd.manifest

File version

Not Applicable

File size

1,300

Date (UTC)

17-Dec-2010

Time (UTC)

07:41

File name

Wow64_microsoft-windows-winsrv_31bf3856ad364e35_6.1.7601.21624_none_1f781343007b3da2.manifest

File version

Not Applicable

File size

1,300

Date (UTC)

18-Dec-2010

Time (UTC)

08:23

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