Windows Server Backup fails when you back up multiple volumes in Windows Server 2012

This issue occurs when you try to back up multiple volumes to a backup destination that's located on a network attached storage device in Windows Server 2012. When this issue occurs, you receive an error message that looks something like this:

Backup of volume VolumeLabel X: has failed. The specified backup disk cannot be found.

Note This issue also occurs in Windows Server 2012 R2, see KB 3114133 for more information.
How to get this update
Important If you install a language pack after you install this update, you must reinstall this update. Therefore, we recommend that you install any language packs that you need before you install this update. For more information, see Add language packs to Windows.

Method 1: Windows Update

This update is provided as a Recommended update on Windows Update. For more information on how to run Windows Update, see How to get an update through Windows Update.

Method 2: Microsoft Download Center

The update is available for download from the Microsoft Download Center:

DownloadDownload the Windows Server 2012 package now.

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.

Update detail information


There's no prerequisite to apply this update.

Registry information

To apply this update, you don't have to make any changes to the registry.

Restart requirement

You may have to restart the computer after you apply this update.

Update replacement information

This update doesn't replace a previously released update.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Learn about the terminology that Microsoft uses to describe software updates.
File Information
The English (United States) version of this software update installs files that have the attributes that are listed in the following tables.

Windows Server 2012

  • 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
    6.2.920 0.17xxxWindows Server 2012RTMGDR
    6.2.920 0.21 xxxWindows Server 2012RTMLDR
  • GDR service branches contain only those fixes that are widely released to address widespread, critical 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 in the "Additional file information" section. MUM, MANIFEST, and the associated security catalog (.cat) files, are very 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.
x64 Windows Server 2012
File nameFile versionFile sizeDateTimePlatform

Additional file information

x64 Windows Server 2012
File propertyValue
File nameAmd64_b7cde7c196d99125d331e080db3769bf_31bf3856ad364e35_6.2.9200.21740_none_2269eea8567d7370.manifest
File versionNot applicable
File size707
Date (UTC)07-Jan-2016
Time (UTC)03:41
PlatformNot applicable
File nameAmd64_f1f1172006c46e263846c0121ed461c1_31bf3856ad364e35_6.2.9200.17621_none_d1439019ae418a3b.manifest
File versionNot applicable
File size707
Date (UTC)07-Jan-2016
Time (UTC)03:41
PlatformNot applicable
File nameAmd64_microsoft-windows-blb-engine-main_31bf3856ad364e35_6.2.9200.17621_none_3ce96af089563c3b.manifest
File versionNot applicable
File size8,055
Date (UTC)06-Jan-2016
Time (UTC)18:24
PlatformNot applicable
File nameAmd64_microsoft-windows-blb-engine-main_31bf3856ad364e35_6.2.9200.21740_none_3d5c6799a284fa90.manifest
File versionNot applicable
File size8,055
Date (UTC)06-Jan-2016
Time (UTC)17:05
PlatformNot applicable
File nameUpdate.mum
File versionNot applicable
File size2,144
Date (UTC)07-Jan-2016
Time (UTC)03:41
PlatformNot applicable

Article ID: 3133679 - Last Review: 03/08/2016 18:59:00 - Revision: 3.0

Windows Server 2012 Datacenter, Windows Server 2012 Standard, Windows Server 2012 Essentials, Windows Server 2012 Foundation

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