"0x800704C9" error when you copy files to an NFS server from a Windows 7-based or Windows Server 2008 R2-based NFS client after the server is restarted

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Article ID: 2761774 - View products that this article applies to.
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Symptoms

Consider the following scenario:
  • You have a Network File System (NFS) client that is running Windows 7 or Windows Server 2008 R2.
  • You copy files to an NFS server.
  • The NFS server or the NFS service is restarted.
  • You try to copy files to the NFS server again.
In this scenario, you cannot copy the files. Additionally, you receive an error message that resembles the following:
An unexpected error is keeping you from copying the file.
If you continue to receive this error, you can use the error code to search for help with this problem.
Error 0x800704C9: The remote computer refused the network connection.

Cause

The issue occurs because the portmapper service changes the port number of the NFS lock manager service (nlockmgr) after the NFS server is restarted. However, Windows 7-based and Windows Server 2008 R2-based NFS clients cache the original port number that was used to communicate with nlockmgr. The NFS client will try to use the cached port number until the NFS client service is restarted.

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 website:
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.

Prerequisites

To apply this hotfix, you must be running one of the following operating systems:
  • Windows 7
  • Windows 7 Service Pack 1 (SP1)
  • Windows Server 2008 R2
  • Windows Server 2008 R2 Service Pack 1 (SP1)
For more information about how to obtain a Windows 7 or Windows Server 2008 R2 service pack, click the following article number to view the article in the Microsoft Knowledge Base:
976932 Information about Service Pack 1 for Windows 7 and for Windows Server 2008 R2

Registry information

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

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

File information

The global version of this hotfix installs files that have the attributes that are listed in the following tables. The dates and the times for these files are listed in Coordinated Universal Time (UTC). The dates and the times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and the times may change when you perform certain operations on the files.
Windows 7 and Windows Server 2008 R2 file information notes
Important Windows 7 hotfixes and Windows Server 2008 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 7/Windows Server 2008 R2" on the page. Always refer to the "Applies To" section in articles to determine the actual operating system that each hotfix applies to.
  • 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:
    Collapse this tableExpand this table
    VersionProductMilestoneService branch
    6.1.760 0.21xxxWindows 7 and Windows Server 2008 R2RTMLDR
    6.1.760 1.22xxxWindows 7 and Windows Server 2008 R2SP1LDR
  • The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately in the "Additional file information for Windows 7 and for Windows Server 2008 R2" section. 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, for which the attributes are not listed, are signed with a Microsoft digital signature.
For all supported x86-based versions of Windows 7
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Nfs-clientcore-ppdlic.xrm-msNot applicable3,00128-Sep-201220:15Not applicable
Nfsclnt.exe6.1.7600.2133252,73628-Sep-201217:57x86
Nfsnp.dll6.1.7600.2133259,90428-Sep-201219:55x86
Nfsrdr.mofNot applicable4,47110-Jun-200921:40Not applicable
Nfsrdr.sys6.1.7600.21332201,72828-Sep-201217:57x86
Nfs-clientcore-ppdlic.xrm-msNot applicable3,00128-Sep-201220:06Not applicable
Nfsclnt.exe6.1.7601.2212252,73628-Sep-201217:47x86
Nfsnp.dll6.1.7601.2212260,41628-Sep-201219:44x86
Nfsrdr.mofNot applicable4,47110-Jun-200921:40Not applicable
Nfsrdr.sys6.1.7601.22122202,24028-Sep-201217:47x86
For all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Nfs-clientcore-ppdlic.xrm-msNot applicable3,00128-Sep-201220:59Not applicable
Nfsclnt.exe6.1.7600.2133265,02428-Sep-201218:11x64
Nfsnp.dll6.1.7600.2133271,68028-Sep-201220:37x64
Nfsrdr.mofNot applicable4,47110-Jun-200921:02Not applicable
Nfsrdr.sys6.1.7600.21332246,78428-Sep-201218:11x64
Nfs-clientcore-ppdlic.xrm-msNot applicable3,00128-Sep-201221:24Not applicable
Nfsclnt.exe6.1.7601.2212265,53628-Sep-201218:22x64
Nfsnp.dll6.1.7601.2212272,19228-Sep-201221:01x64
Nfsrdr.mofNot applicable4,47110-Jun-200921:02Not applicable
Nfsrdr.sys6.1.7601.22122247,29628-Sep-201218:21x64
For all supported IA-64-based versions of Windows Server 2008 R2
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Nfs-clientcore-ppdlic.xrm-msNot applicable3,00128-Sep-201220:03Not applicable
Nfsclnt.exe6.1.7600.21332155,64828-Sep-201217:34IA-64
Nfsnp.dll6.1.7600.21332159,23228-Sep-201219:44IA-64
Nfsrdr.mofNot applicable4,47110-Jun-200921:07Not applicable
Nfsrdr.sys6.1.7600.21332587,77628-Sep-201217:34IA-64
Nfs-clientcore-ppdlic.xrm-msNot applicable3,00128-Sep-201220:10Not applicable
Nfsclnt.exe6.1.7601.22122156,16028-Sep-201217:40IA-64
Nfsnp.dll6.1.7601.22122159,74428-Sep-201219:47IA-64
Nfsrdr.mofNot applicable4,47110-Jun-200921:07Not applicable
Nfsrdr.sys6.1.7601.22122589,82428-Sep-201217:39IA-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 file information

Additional file information for Windows 7 and for Windows Server 2008 R2

Additional files for all supported x86-based versions of Windows 7
Collapse this tableExpand this table
File nameX86_9a25c2b93c6fbc1437cf131a08879848_31bf3856ad364e35_6.1.7600.21332_none_800be0a8c44495e4.manifest
File versionNot applicable
File size702
Date (UTC)28-Sep-2012
Time (UTC)23:03
PlatformNot applicable
File nameX86_bca3a986c652b3b42ec5fd59337389f9_31bf3856ad364e35_6.1.7601.22122_none_68119a0166fd89ac.manifest
File versionNot applicable
File size702
Date (UTC)28-Sep-2012
Time (UTC)23:03
PlatformNot applicable
File nameX86_microsoft-windows-nfs-clientcore_31bf3856ad364e35_6.1.7600.21332_none_ad7565b3bcdf901f.manifest
File versionNot applicable
File size28,372
Date (UTC)28-Sep-2012
Time (UTC)21:40
PlatformNot applicable
File nameX86_microsoft-windows-nfs-clientcore_31bf3856ad364e35_6.1.7601.22122_none_af6692a5b9fde01a.manifest
File versionNot applicable
File size28,372
Date (UTC)28-Sep-2012
Time (UTC)20:15
PlatformNot applicable
Additional files for all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
Collapse this tableExpand this table
File nameAmd64_0389ba02e90b0436164a3830fc700129_31bf3856ad364e35_6.1.7601.22122_none_6ea33881c21bffd7.manifest
File versionNot applicable
File size706
Date (UTC)28-Sep-2012
Time (UTC)23:03
PlatformNot applicable
File nameAmd64_bd9c231889d51bd72425a134fee48b3a_31bf3856ad364e35_6.1.7600.21332_none_f662598b78226088.manifest
File versionNot applicable
File size706
Date (UTC)28-Sep-2012
Time (UTC)23:03
PlatformNot applicable
File nameAmd64_microsoft-windows-nfs-clientcore_31bf3856ad364e35_6.1.7600.21332_none_09940137753d0155.manifest
File versionNot applicable
File size28,376
Date (UTC)28-Sep-2012
Time (UTC)21:18
PlatformNot applicable
File nameAmd64_microsoft-windows-nfs-clientcore_31bf3856ad364e35_6.1.7601.22122_none_0b852e29725b5150.manifest
File versionNot applicable
File size28,376
Date (UTC)28-Sep-2012
Time (UTC)21:34
PlatformNot applicable
Additional files for all supported IA-64-based versions of Windows Server 2008 R2
Collapse this tableExpand this table
File nameIa64_d7d8872ea0ce95bf64dcae23b8c120f0_31bf3856ad364e35_6.1.7601.22122_none_9b3f34b51e7b801b.manifest
File versionNot applicable
File size704
Date (UTC)28-Sep-2012
Time (UTC)23:03
PlatformNot applicable
File nameIa64_e5facb9d478ed5b6794588cd07ae3a69_31bf3856ad364e35_6.1.7600.21332_none_18d701da5d80bef2.manifest
File versionNot applicable
File size704
Date (UTC)28-Sep-2012
Time (UTC)23:03
PlatformNot applicable
File nameIa64_microsoft-windows-nfs-clientcore_31bf3856ad364e35_6.1.7600.21332_none_ad7709a9bcdd991b.manifest
File versionNot applicable
File size28,374
Date (UTC)28-Sep-2012
Time (UTC)21:19
PlatformNot applicable
File nameIa64_microsoft-windows-nfs-clientcore_31bf3856ad364e35_6.1.7601.22122_none_af68369bb9fbe916.manifest
File versionNot applicable
File size28,374
Date (UTC)28-Sep-2012
Time (UTC)21:13
PlatformNot applicable

Properties

Article ID: 2761774 - Last Review: November 14, 2012 - Revision: 1.0
Applies to
  • Windows 7 Service Pack 1
  • Windows 7 Enterprise
  • Windows 7 Home Basic
  • Windows 7 Home Premium
  • Windows 7 Professional
  • Windows 7 Starter
  • Windows 7 Ultimate
  • Windows Server 2008 R2 Service Pack 1
  • Windows Server 2008 R2 Datacenter
  • Windows Server 2008 R2 Enterprise
  • Windows Server 2008 R2 for Itanium-Based Systems
  • Windows Server 2008 R2 Foundation
  • Windows Server 2008 R2 Standard
  • Windows Web Server 2008 R2
Keywords: 
kbautohotfix kbqfe kbhotfixserver kbfix kbsurveynew kbexpertiseadvanced kberrmsg KB2761774

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