The NFS services stop responding after a certain period when you use a Windows Server 2008-based server that has NFS installed to export NFS shares

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Article ID: 967670 - View products that this article applies to.
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SYMPTOMS

Consider the following scenario:
  • You have a Windows Server 2008-based server that has Microsoft Services for Network File System (NFS) installed.
  • The server exports NFS shares to NFS clients.
In this scenario, the NFS services stop responding after a certain period. The NFS clients cannot access the shares that they have mounted. Also, the clients cannot mount the other shares from the NFS server. Additionally, when you run the showmount command prompt utility or the rpcinfo command prompt utility against the NFS server, a time-out error may occur.

Note The NFS services recover after you restart the NFS server.

CAUSE

This problem occurs because an acquired Mutex object is not released in a code path. This makes the NFS services unresponsive.

RESOLUTION

Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing the problem described in this article. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain 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 do not 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 Web site:
http://support.microsoft.com/contactus/?ws=support
Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Important Windows Vista and Windows Server 2008 hotfixes are included in the same packages. However, only one of these products may be listed on the “Hotfix Request” page. To request the hotfix package that applies to both Windows Vista and Windows Server 2008, just select the product that is listed on the page.

Prerequisites

To apply this hotfix, the computer must run Windows Server 2008. Also, Services for NFS must be installed.

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

Registry information

To use this hotfix, you do not have to make any changes to the registry.

File information

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.

Windows Server 2008 file information note

The MANIFEST (.manifest) files and the MUM (.mum) files that are installed for each environment are listed separately. The MUM and MANIFEST files, and the associated security catalog (.cat) files, are critical to maintaining the state of the updated component. The security catalog files, whose attributes are not listed, are signed by using a Microsoft digital signature.
Windows Server 2008 and Windows Server Core, x86-based version
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Msnfsflt.mofNot applicable4,43718-Dec-200721:26Not applicable
Msnfsflt.sys6.0.6001.2237523,04012- Feb-200902:57x86
Nfs-servercore-ppdlic.xrm- msNot applicable3,00112-Feb-200905:09Not applicable
Nfssvc.exe6.0.6001.2237527,13612- Feb-200905:40x86
Nfssvr.mofNot applicable6,17218-Dec-200721:26Not applicable
Nfssvr.sys6.0.6001.22375493,56812- Feb-200902:57x86
Windows Server 2008 and Windows Server Core, x64-based version
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Msnfsflt.mofNot applicable4,43718-Dec-200721:26Not applicable
Msnfsflt.sys6.0.6001.2237529,69612- Feb-200903:31x64
Nfs-servercore-ppdlic.xrm- msNot applicable3,00112-Feb-200905:43Not applicable
Nfssvc.exe6.0.6001.2237531,74412- Feb-200906:14x64
Nfssvr.mofNot applicable6,17218-Dec-200721:26Not applicable
Nfssvr.sys6.0.6001.22375645,63212- Feb-200903:32x64
Windows Server 2008, Itanium-based version
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Msnfsflt.mofNot applicable4,43718-Dec-200721:26Not applicable
Msnfsflt.sys6.0.6001.2237564,51212- Feb-200902:03IA-64
Nfs-servercore-ppdlic.xrm- msNot applicable3,00112-Feb-200904:19Not applicable
Nfssvc.exe6.0.6001.2237564,51212- Feb-200904:47IA-64
Nfssvr.mofNot applicable6,17218-Dec-200721:26Not applicable
Nfssvr.sys6.0.6001.223751,403,90412 -Feb-200902:04IA-64

STATUS

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

MORE INFORMATION

For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates

Additional files for all supported x86-based versions of Windows Server 2008 and Windows Server Core

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File namePackage_for_kb967670_sc_0~31bf3856ad364e35~x86~~6.0.1.0.mum
File versionNot applicable
File size1,409
Date (UTC) 12-Feb-2009
Time (UTC) 18:42
File namePackage_for_kb967670_sc~31bf3856ad364e35~x86~~6.0.1.0.mum
File versionNot applicable
File size1,422
Date (UTC) 12-Feb-2009
Time (UTC) 18:42
File namePackage_for_kb967670_server_0~31bf3856ad364e35~x86~~6.0.1.0.mum
File versionNot applicable
File size1,423
Date (UTC) 12-Feb-2009
Time (UTC) 18:42
File namePackage_for_kb967670_server~31bf3856ad364e35~x86~~6.0.1.0.mum
File versionNot applicable
File size1,430
Date (UTC) 12-Feb-2009
Time (UTC) 18:42
File nameX86_microsoft-windows-nfs- servercore_31bf3856ad364e35_6.0.6001.22375_none_5be79b09209d8f60.manifest
File versionNot applicable
File size50,906
Date (UTC) 12-Feb-2009
Time (UTC) 05:59

Additional files for all supported x64-based versions of Windows Server 2008 and Windows Server Core

Collapse this tableExpand this table
File nameAmd64_microsoft-windows -nfs- servercore_31bf3856ad364e35_6.0.6001.22375_none_b806368cd8fb0096.manifest
File versionNot applicable
File size50,940
Date (UTC) 12-Feb-2009
Time (UTC) 06:33
File namePackage_for_kb967670_sc_0~31bf3856ad364e35~amd64~~6.0.1.0.mum
File versionNot applicable
File size1,417
Date (UTC) 12-Feb-2009
Time (UTC) 18:42
File namePackage_for_kb967670_sc~31bf3856ad364e35~amd64~~6.0.1.0.mum
File versionNot applicable
File size1,430
Date (UTC) 12-Feb-2009
Time (UTC) 18:42
File namePackage_for_kb967670_server_0~31bf3856ad364e35~amd64~~6.0.1.0.mum
File versionNot applicable
File size1,431
Date (UTC) 12-Feb-2009
Time (UTC) 18:42
File namePackage_for_kb967670_server~31bf3856ad364e35~amd64~~6.0.1.0.mum
File versionNot applicable
File size1,438
Date (UTC) 12-Feb-2009
Time (UTC) 18:42

Additional files for all supported Itanium-Based versions of Windows Server 2008

Collapse this tableExpand this table
File nameIa64_microsoft-windows- nfs- servercore_31bf3856ad364e35_6.0.6001.22375_none_5be93eff209b985c.manifest
File versionNot applicable
File size50,923
Date (UTC) 12-Feb-2009
Time (UTC) 05:03
File namePackage_for_kb967670_server_0~31bf3856ad364e35~ia64~~6.0.1.0.mum
File versionNot applicable
File size1,427
Date (UTC) 12-Feb-2009
Time (UTC) 18:42
File namePackage_for_kb967670_server~31bf3856ad364e35~ia64~~6.0.1.0.mum
File versionNot applicable
File size1,434
Date (UTC) 12-Feb-2009
Time (UTC) 18:42

Properties

Article ID: 967670 - Last Review: October 7, 2011 - Revision: 2.0
APPLIES TO
  • Windows Server 2008 Datacenter
  • Windows Server 2008 Enterprise
  • Windows Server 2008 Standard
Keywords: 
kbautohotfix kbexpertiseadvanced kbfix kbsurveynew kbqfe KB967670

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