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

Article translations Article translations
Article ID: 982502 - View products that this article applies to.
Expand all | Collapse all

On This Page

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:

Log Name: Application
Source: Microsoft-Windows-Backup
Event ID: 547
Task Category: None
Level: Warning
Description:
The backup operation that started at time has encountered errors for the volume(s) volume. Log of files not successfully backed up.

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=support
Note 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
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Wbengine.exe6.1.7600.206901,203,20013-Apr-201011:19x86
For all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Wbengine.exe6.1.7600.206901,503,74413-Apr-201011:09x64
For all supported IA-64-based versions of Windows Server 2008 R2
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Wbengine.exe6.1.7600.206903,716,09613-Apr-201009:00IA-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 Wizard
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
Collapse this tableExpand this table
File nameUpdate.mum
File versionNot applicable
File size1,652
Date (UTC)13-Apr-2010
Time (UTC)17:03
File nameX86_7c3922c970ec6bbd39ef420bd343a74d_31bf3856ad364e35_6.1.7600.20690_none_662210dee041891e.manifest
File versionNot applicable
File size703
Date (UTC)13-Apr-2010
Time (UTC)17:03
File nameX86_microsoft-windows-blb-engine-main_31bf3856ad364e35_6.1.7600.20690_none_e4321b547a3db5a0.manifest
File versionNot applicable
File size7,062
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
Collapse this tableExpand this table
File nameAmd64_1af6a73053456c5a70085a17692e2453_31bf3856ad364e35_6.1.7600.20690_none_5236b5462d097da8.manifest
File versionNot applicable
File size707
Date (UTC)13-Apr-2010
Time (UTC)17:03
File nameAmd64_microsoft-windows-blb-engine-main_31bf3856ad364e35_6.1.7600.20690_none_4050b6d8329b26d6.manifest
File versionNot applicable
File size7,068
Date (UTC)13-Apr-2010
Time (UTC)13:07
File nameUpdate.mum
File versionNot applicable
File size1,855
Date (UTC)13-Apr-2010
Time (UTC)17:03
Additional files for all supported IA-64-based versions of Windows Server 2008 R2
Collapse this tableExpand this table
File nameIa64_7354e6939cb4247f9672be6987494161_31bf3856ad364e35_6.1.7600.20690_none_a59eabcedad2e245.manifest
File versionNot applicable
File size705
Date (UTC)13-Apr-2010
Time (UTC)17:03
File nameIa64_microsoft-windows-blb-engine-main_31bf3856ad364e35_6.1.7600.20690_none_e433bf4a7a3bbe9c.manifest
File versionNot applicable
File size7,065
Date (UTC)13-Apr-2010
Time (UTC)12:58
File nameUpdate.mum
File versionNot applicable
File size1,434
Date (UTC)13-Apr-2010
Time (UTC)17:03

Properties

Article ID: 982502 - Last Review: June 10, 2010 - Revision: 2.0
APPLIES TO
  • Windows 7 Enterprise
  • Windows 7 Home Basic
  • Windows 7 Home Premium
  • Windows 7 Professional
  • Windows 7 Starter
  • Windows 7 Ultimate
  • Windows Server 2008 R2 Datacenter
  • Windows Server 2008 R2 Enterprise
  • Windows Server 2008 R2 Standard
Keywords: 
kbautohotfix kbfix kbqfe kbsurveynew kbHotfixServer kbexpertiseadvanced KB982502

Give Feedback

 

Contact us for more help

Contact us for more help
Connect with Answer Desk for expert help.
Get more support from smallbusiness.support.microsoft.com