Files are corrupted on deduplicated volumes that were created as NTFS-compressed in Windows Server 2012 R2

This article describes an issue that occurs if you enable data deduplication on an NTFS compressed volume in Windows Server 2012 R2. You can fix this issue by using the update in this article. Before you install this update, see the Prerequisites section.

Symptoms

Users can no longer open files on a deduplication-enabled volume that's created with NTFS compression enabled at the root of the volume. Additionally, the corrupted files can no longer be recovered.

Cause

This issue occurs because deduplication metadata that's stored on the compressed volume root becomes corrupted when a process writes in-place to a file on the deduplicated volume. The deduplication metadata that is stored on the compressed volume root is located under the System Volume Information (SVI) folder.

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 about 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:

Download Download the Windows Server 2012 R2 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

Prerequisites

To apply this update, you must have April 2014 update rollup for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 (2919355) installed in Windows Server 2012 R2.

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.

Status

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

References

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.

Notes

  • 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

    6.3.960 0.18 xxx

    Windows Server 2012 R2

    RTM

    GDR

  • 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 8.1 and Windows Server 2012 R2

File name

File version

File size

Date

Time

Platform

Ddpcli.exe

6.3.9600.18205

272,896

22-Jan-2016

06:21

x64

Ddpeval.exe

6.3.9600.18205

2,278,400

22-Jan-2016

07:56

x64

Ddpsvc.dll

6.3.9600.18205

1,139,200

22-Jan-2016

06:15

x64

Ddpwmi.dll

6.3.9600.18205

464,896

22-Jan-2016

06:25

x64

Dedupfilemetadata.cdxml

Not applicable

1,446

18-Jun-2013

15:13

Not applicable

Dedupjob.cdxml

Not applicable

8,851

19-Aug-2014

22:13

Not applicable

Deduplication.format.ps1xml

Not applicable

29,987

18-Jun-2013

15:13

Not applicable

Deduplication.psd1

Not applicable

1,241

18-Jun-2013

15:13

Not applicable

Deduplication.types.ps1xml

Not applicable

5,459

18-Jun-2013

15:13

Not applicable

Deduplicationprovider.mof

Not applicable

18,030

18-Jun-2013

15:13

Not applicable

Dedupmetadata.cdxml

Not applicable

1,075

18-Jun-2013

15:13

Not applicable

Dedupschedule.cdxml

Not applicable

12,547

18-Jun-2013

15:13

Not applicable

Dedupstatus.cdxml

Not applicable

2,238

18-Jun-2013

15:13

Not applicable

Dedupvolume.cdxml

Not applicable

9,552

18-Jun-2013

15:13

Not applicable


x64 Windows Server 2012 R2

File property

Value

File name

Amd64_f1539348a650aaa119941dc140677bb0_31bf3856ad364e35_6.3.9600.18205_none_66819715cc8c5670.manifest

File version

Not applicable

File size

705

Date (UTC)

22-Jan-2016

Time (UTC)

20:23

Platform

Not applicable

File name

Amd64_microsoft-windows-dedup-service_31bf3856ad364e35_6.3.9600.18205_none_c01009053d29d4d6.manifest

File version

Not applicable

File size

26,307

Date (UTC)

22-Jan-2016

Time (UTC)

08:11

Platform

Not applicable

File name

Update.mum

File version

Not applicable

File size

1,575

Date (UTC)

22-Jan-2016

Time (UTC)

20:23

Platform

Not applicable


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