Symptoms

Consider the following scenario:

  • You use the Windows Backup utility to perform a backup on a computer that is running Windows 7. The backed up files are saved on a hard disk drive.

  • You use the Windows Backup utility again to perform a backup for a group of files that are larger than the first group of backed up files.


In this scenario, the backup process requires significantly more time than the backup process for the first group of backed up files.

For example, the backup process requires 2 hours for 100 gigabytes (GB) of files and 16 hours for 400 GB of files.

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 Windows 7.

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 English (United States) 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 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

Microsoftwindowssafedocsmain-ppdlic.xrm-ms

Not Applicable

3,194

17-Jul-2010

07:39

Not Applicable

Sdautoplay.dll

6.1.7600.16385

46,592

14-Jul-2009

01:16

x86

Sdclt.exe

6.1.7600.20757

1,131,008

17-Jul-2010

07:22

x86

Sdengin2.dll

6.1.7600.20757

907,776

17-Jul-2010

07:26

x86

Sdrsvc.dll

6.1.7600.20757

125,952

17-Jul-2010

07:26

x86

Sdshext.dll

6.1.7600.16385

102,912

14-Jul-2009

01:16

x86

For all supported x64-based versions of Windows 7

File name

File version

File size

Date

Time

Platform

Microsoftwindowssafedocsmain-ppdlic.xrm-ms

Not Applicable

3,194

17-Jul-2010

08:17

Not Applicable

Sdautoplay.dll

6.1.7600.16385

48,640

14-Jul-2009

01:41

x64

Sdclt.exe

6.1.7600.20757

1,264,640

17-Jul-2010

08:05

x64

Sdengin2.dll

6.1.7600.20757

1,120,768

17-Jul-2010

08:06

x64

Sdrsvc.dll

6.1.7600.20757

170,496

17-Jul-2010

08:06

x64

Sdshext.dll

6.1.7600.16385

126,464

14-Jul-2009

01:41

x64

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

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

File name

X86_6d7c3a36ee5badf88a1560f1ac26098a_31bf3856ad364e35_6.1.7600.20757_none_cf3de23bbe2f7be9.manifest

File version

Not Applicable

File size

701

Date (UTC)

20-Jul-2010

Time (UTC)

01:07

Platform

Not Applicable

File name

X86_microsoft-windows-safedocs-main_31bf3856ad364e35_6.1.7600.20757_none_258c2544e11f9f57.manifest

File version

Not Applicable

File size

49,242

Date (UTC)

20-Jul-2010

Time (UTC)

01:10

Platform

Not Applicable

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

File name

Amd64_b6d45829fb9b677ef0eed9db198c664f_31bf3856ad364e35_6.1.7600.20757_none_8ec9288e2b70263c.manifest

File version

Not Applicable

File size

705

Date (UTC)

20-Jul-2010

Time (UTC)

01:07

Platform

Not Applicable

File name

Amd64_microsoft-windows-safedocs-main_31bf3856ad364e35_6.1.7600.20757_none_81aac0c8997d108d.manifest

File version

Not Applicable

File size

49,246

Date (UTC)

20-Jul-2010

Time (UTC)

01:07

Platform

Not Applicable

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