This article describes an issue that occurs on a Windows Server 2012 R2 or Windows Server 2012-based Network File System (NFS) file server. A hotfix is available to fix this issue. The hotfix has a prerequisite.

Symptoms

Assume that you have NFS clients (Windows or UNIX) that access the NFS file server. In this situation, when you have many clients (local or remote applications, such as Server Message Block (SMB) and 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.

Hotfix information

Important If you install a language pack after you install this hotfix, you must reinstall this hotfix. Therefore, we recommend that you install any language packs that you need before you install this hotfix. For more information, see Add language packs to Windows.

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that's described in this article. Apply this hotfix only to systems that are experiencing this specific problem.

If the hotfix is available for download, there's a "Hotfix Download Available" section at the top of this Knowledge Base article. If this section doesn't appear, submit a request to Microsoft Customer Service and Support to get 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 don't 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 website:

http://support.microsoft.com/contactus/?ws=supportNote The "Hotfix Download Available" form displays the languages for which the hotfix is available. If you don't see your language, it's because a hotfix isn't available for that language.

Prerequisites

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

Registry information

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

Restart requirement

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

Hotfix replacement information

This hotfix doesn't replace a previously released hotfix.

Status

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

References

See 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.

Important Windows 8.1 hotfixes and Windows Server 2012 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 8.1/Windows Server 2012 R2" on the page. Always refer to the "Applies To" section in articles to determine the actual operating system that each hotfix applies to.


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 Server 2012 R2

File name

File version

File size

Date

Time

Platform

Msnfsflt.mof

Not applicable

4,460

18-Jun-2013

15:17

Not applicable

Msnfsflt.sys

6.3.9600.18052

31,744

10-Sep-2015

17:33

x64

Nfs-servercore-ppdlic.xrm-ms

Not applicable

2,893

12-Sep-2015

15:31

Not applicable

Nfssvc.exe

6.3.9600.18052

67,584

10-Sep-2015

17:22

x64

Nfssvr.mof

Not applicable

6,233

18-Jun-2013

15:17

Not applicable

Nfssvr.sys

6.3.9600.18054

1,234,944

12-Sep-2015

14:28

x64


Important Windows 8 hotfixes and Windows Server 2012 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 8/Windows Server 2012" on the page. Always refer to the "Applies To" section in articles to determine the actual operating system that each hotfix applies to.

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 0.16 xxx

    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 Server 2012

File name

File version

File size

Date

Time

Platform

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

14-Sep-2015

21:16

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

6.2.9200.21631

1,251,840

12-Sep-2015

13:18

x64


x64 Windows Server 2012 R2

File property

Value

File name

Amd64_b24168fff2cf2f21713b3681cd55b677_31bf3856ad364e35_6.3.9600.18054_none_7ca6a776b78c6b10.manifest

File version

Not applicable

File size

706

Date (UTC)

13-Sep-2015

Time (UTC)

17:03

Platform

Not applicable

File name

Amd64_microsoft-windows-nfs-servercore_31bf3856ad364e35_6.3.9600.18054_none_4c834500db2aa16c.manifest

File version

Not applicable

File size

38,040

Date (UTC)

12-Sep-2015

Time (UTC)

16:04

Platform

Not applicable

File name

Update.mum

File version

Not applicable

File size

1,609

Date (UTC)

13-Sep-2015

Time (UTC)

17:03

Platform

Not applicable

x64 Windows Server 2012

File property

Value

File name

Amd64_9d4868c7da9cf23f7a2a2ff0a63e517e_31bf3856ad364e35_6.2.9200.21632_none_c6d6492f74b77467.manifest

File version

Not applicable

File size

706

Date (UTC)

15-Sep-2015

Time (UTC)

03:49

Platform

Not applicable

File name

Amd64_microsoft-windows-nfs-servercore_31bf3856ad364e35_6.2.9200.21632_none_b52be8afaa06de4b.manifest

File version

Not applicable

File size

38,027

Date (UTC)

15-Sep-2015

Time (UTC)

03:49

Platform

Not applicable

File name

Update.mum

File version

Not applicable

File size

1,609

Date (UTC)

15-Sep-2015

Time (UTC)

03:49

Platform

Not applicable


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