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
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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.
Windows Server 2012 R2
Additional file information
Propriedades

ID do Artigo: 3137923 - Última Revisão: 12/04/2016 - Revisão: 1

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