Symptoms

This issue occurs when the following conditions are true:

  • You have a Network File System (NFS) file server which is hosted on a two-node Windows Server 2012-based clustered storage server.

  • You have the Data Deduplication feature enabled.

  • The NFS service takes a long time for failover, and then the Resource Hosting Subsystem (RHS) times out.

Also, assume that you have NFS clients that are running Windows or UNIX access the NFS file server. In this situation, when you have many clients (local or remote applications, such as Server Message Block (SMB) or FTP) access this share, sharing violations occur on the server-side intermittently. It causes a brief outage of certain operations, such as directory listing, which can cause third-party applications to fail.

Cause

This issue occurs because many reparse points are generated by the Data Deduplication service.

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 Recommendedupdate 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 following files are available for download from the Microsoft Download Center:

Operating system

Update

All supported x64-based versions of Windows Server 2012

Download Download the package now.

For more information about how to download Microsoft support files, select 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

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 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. The dates and times for these files are listed in Coordinated Universal Time (UTC). Be aware that dates and times for these files on your local computer are displayed in your local time and with your current daylight saving time bias. The dates and times may also change when you perform certain operations on the files.

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

    6.2.920 0.16xxx

    Windows Server 2012

    RTM

    GDR

    6.2.920 0.17xxx

    Windows Server 2012

    RTM

    GDR

    6.2.920 0.21xxx

    Windows Server 2012

    RTM

    LDR

  • 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 and Windows Server 2012

File name

File version

File size

Date

Time

Platform

Msnfsflt.mof

Not applicable

4,460

06-Jul-2012

20:34

Not applicable

Msnfsflt.sys

6.2.9200.16453

32,256

08-Nov-2012

04:00

x64

Nfs-servercore-ppdlic.xrm-ms

Not applicable

2,893

14-Jan-2016

01:08

Not applicable

Nfssvc.exe

6.2.9200.16453

67,584

08-Nov-2012

04:22

x64

Nfssvr.mof

Not applicable

6,233

06-Jul-2012

20:34

Not applicable

Nfssvr.sys

6.2.9200.17626

1,252,352

13-Jan-2016

19:40

x64

Msnfsflt.mof

Not applicable

4,460

02-Jun-2012

14:44

Not applicable

Msnfsflt.sys

6.2.9200.16384

32,256

26-Jul-2012

02:29

x64

Nfs-servercore-ppdlic.xrm-ms

Not applicable

2,893

13-Jan-2016

23:33

Not applicable

Nfssvc.exe

6.2.9200.16384

67,584

26-Jul-2012

03:08

x64

Nfssvr.mof

Not applicable

6,233

02-Jun-2012

14:44

Not applicable

Nfssvr.sys

6.2.9200.21745

1,252,352

13-Jan-2016

19:31

x64


x64 Windows 8 and Windows Server 2012

File property

Value

File name

Amd64_84b329e10e7065a9735f3f1c23e6894a_31bf3856ad364e35_6.2.9200.17626_none_c2aead7b7266d2e3.manifest

File version

Not applicable

File size

706

Date (UTC)

15-Jan-2016

Time (UTC)

00:20

Platform

Not applicable

File name

Amd64_ed66009503c9932fb24b91d815692a2d_31bf3856ad364e35_6.2.9200.21745_none_13a6cd7d6e3f073f.manifest

File version

Not applicable

File size

706

Date (UTC)

15-Jan-2016

Time (UTC)

00:20

Platform

Not applicable

File name

Amd64_microsoft-windows-nfs-servercore_31bf3856ad364e35_6.2.9200.17626_none_b4b11ede90dd8513.manifest

File version

Not applicable

File size

38,027

Date (UTC)

15-Jan-2016

Time (UTC)

00:20

Platform

Not applicable

File name

Amd64_microsoft-windows-nfs-servercore_31bf3856ad364e35_6.2.9200.21745_none_b5241b87aa0c4368.manifest

File version

Not applicable

File size

38,027

Date (UTC)

15-Jan-2016

Time (UTC)

00:20

Platform

Not applicable

File name

Update.mum

File version

Not applicable

File size

1,600

Date (UTC)

15-Jan-2016

Time (UTC)

00:20

Platform

Not applicable


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