You cannot back up a file in Windows Server 2008 R2 or in Windows 7 if the path length is longer than 260 characters

Symptoms

Consider the following scenario:

  • You customize a backup operation to back up some files on a computer that is running Windows Server 2008 R2 or Windows 7.

  • You select some files that you want to include in the backup operation. The path length of one selected file is longer than 260 characters.

In this scenario, the backup operation fails after the backup operation is started. Additionally, the following event is added to the Application log:

Cause

This issue occurs because the Windows Block Level Backup Engine service (Wbengine.exe) handles file paths that are longer than 260 characters incorrectly.

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 or Windows Server 2008 R2. Additionally, you must have the Windows Server Backup feature installed on the computer that is running 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


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 maintaining the state of the updated component. 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

Wbengine.exe

6.1.7600.20690

1,203,200

13-Apr-2010

11:19

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

Wbengine.exe

6.1.7600.20690

1,503,744

13-Apr-2010

11:09

x64

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

File name

File version

File size

Date

Time

Platform

Wbengine.exe

6.1.7600.20690

3,716,096

13-Apr-2010

09:00

IA-64

Workaround

To work around this issue, move the file to a location that reduces the path length of the file to less than 260 characters, and then back up the file.

Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

More Information

When this issue occurs, you find the following entry in the Windows backup log:

Error in backup of volume name during read: Error [0x80070057] The parameter is incorrect.

Error in backup of volume path during read: Error [0x8007007b] The filename, directory name, or volume label syntax is incorrect.For more information about Backup Schedule Wizard that is started from the Windows Server Backup Microsoft Management Console (MMC) snap-in, view the following Microsoft Tech website:

General information about Backup Schedule WizardFor 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

Update.mum

File version

Not applicable

File size

1,652

Date (UTC)

13-Apr-2010

Time (UTC)

17:03

File name

X86_7c3922c970ec6bbd39ef420bd343a74d_31bf3856ad364e35_6.1.7600.20690_none_662210dee041891e.manifest

File version

Not applicable

File size

703

Date (UTC)

13-Apr-2010

Time (UTC)

17:03

File name

X86_microsoft-windows-blb-engine-main_31bf3856ad364e35_6.1.7600.20690_none_e4321b547a3db5a0.manifest

File version

Not applicable

File size

7,062

Date (UTC)

13-Apr-2010

Time (UTC)

11:55

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

File name

Amd64_1af6a73053456c5a70085a17692e2453_31bf3856ad364e35_6.1.7600.20690_none_5236b5462d097da8.manifest

File version

Not applicable

File size

707

Date (UTC)

13-Apr-2010

Time (UTC)

17:03

File name

Amd64_microsoft-windows-blb-engine-main_31bf3856ad364e35_6.1.7600.20690_none_4050b6d8329b26d6.manifest

File version

Not applicable

File size

7,068

Date (UTC)

13-Apr-2010

Time (UTC)

13:07

File name

Update.mum

File version

Not applicable

File size

1,855

Date (UTC)

13-Apr-2010

Time (UTC)

17:03

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

File name

Ia64_7354e6939cb4247f9672be6987494161_31bf3856ad364e35_6.1.7600.20690_none_a59eabcedad2e245.manifest

File version

Not applicable

File size

705

Date (UTC)

13-Apr-2010

Time (UTC)

17:03

File name

Ia64_microsoft-windows-blb-engine-main_31bf3856ad364e35_6.1.7600.20690_none_e433bf4a7a3bbe9c.manifest

File version

Not applicable

File size

7,065

Date (UTC)

13-Apr-2010

Time (UTC)

12:58

File name

Update.mum

File version

Not applicable

File size

1,434

Date (UTC)

13-Apr-2010

Time (UTC)

17:03

Potrzebna dalsza pomoc?

Rozwijaj swoje umiejętności
Poznaj szkolenia
Uzyskuj nowe funkcje w pierwszej kolejności
Dołącz do niejawnych testerów firmy Microsoft

Czy te informacje były pomocne?

Co wpłynęło na Twoje wrażenia?

Czy chcesz przekazać jakieś inne uwagi? (Opcjonalnie)

Dziękujemy za opinię!

×