Windows applications and APIs cannot enumerate path names on NFS mounted volumes on Windows Server 2003 R2-based computers and on Windows Server 2008-based computers

Symptoms

On a Windows Server 2003 R2-based computer or on a Windows Server 2008-based computer that is running Client for Network File System (NFS), Windows applications and APIs cannot enumerate path names on NFS mounted volumes. This occurs if the length of the path names is greater than 260 characters. Additionally, path names that are prefixed by using "\\?\" cannot be enumerated.

Cause

This problem occurs because of a limitation of the path length in the Client for NFS driver. The maximum path length is 260 characters.

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=supportNote 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 Server 2003 R2 Service Pack 2 (SP2)

  • Windows Server 2008

  • Windows Server 2008 Service Pack 2 (SP2)


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 2003 file information notes
  • In addition to the files that are listed in these tables, this hotfix also installs an associated security catalog file (KBnumber.cat) that is signed with a Microsoft digital signature.

In addition to the files that are listed in these tables, this hotfix also installs an associated security catalog file (KB<Placeholder>number</Placeholder>.cat) that is signed with a Microsoft digital signature.

Windows Server 2003 R2 Service Pack 2, x86-based versions

File name

File version

File size

Date

Time

Platform

Nfsrdr.sys

5.2.3790.4480

324,608

21-Mar-2009

13:31

x86

Windows Server 2003 R2 Service Pack 2, x64-based versions

File name

File version

File size

Date

Time

Platform

Nfsrdr.sys

5.2.3790.4480

481,280

21-Mar-2009

15:25

x64

Windows Server 2008 file information note

Important Windows Vista hotfixes and Windows Server 2008 hotfixes are included in the same packages. However, only "Windows Vista" is listed on the Hotfix Request page. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows Vista" 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, SR_Level (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table.

    Version

    Product

    SR_Level

    Service branch

    6.0.600
    0.
    20xxx

    Windows Vista

    RTM

    LDR

    6.0.600
    1.
    22xxx

    Windows Vista and Windows Server 2008

    SP1

    LDR

    6.0.600
    2.
    22xxx

    Windows Vista and Windows Server 2008

    SP2

    LDR

  • Service Pack 1 is integrated into the release version of Windows Server 2008. Therefore, RTM milestone files apply only to Windows Vista. RTM milestone files have a 6.0.0000.xxxxx version number.

  • 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 Server 2008 and for Windows Vista" section. MUM files and MANIFEST files, and the associated security catalog (.cat) files, are extremely 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.

For all supported x86-based versions of Windows Server 2008

File name

File version

File size

Date

Time

Platform

Nfs-clientcore-ppdlic.xrm-ms

Not Applicable

3,001

13-May-2010

16:54

Not Applicable

Nfsclnt.exe

6.0.6001.22691

50,688

13-May-2010

15:27

x86

Nfsnp.dll

6.0.6001.22691

59,904

13-May-2010

17:14

x86

Nfsrdr.mof

Not Applicable

4,448

17-Mar-2010

04:53

Not Applicable

Nfsrdr.sys

6.0.6001.22691

195,584

13-May-2010

15:27

x86

Nfs-clientcore-ppdlic.xrm-ms

Not Applicable

3,001

13-May-2010

18:01

Not Applicable

Nfsclnt.exe

6.0.6002.22404

51,200

13-May-2010

15:49

x86

Nfsnp.dll

6.0.6002.22404

60,928

13-May-2010

18:25

x86

Nfsrdr.mof

Not Applicable

4,448

03-Apr-2009

22:45

Not Applicable

Nfsrdr.sys

6.0.6002.22404

195,584

13-May-2010

15:49

x86

For all supported x64-based versions of Windows Server 2008

File name

File version

File size

Date

Time

Platform

Nfs-clientcore-ppdlic.xrm-ms

Not Applicable

3,001

13-May-2010

17:16

Not Applicable

Nfsclnt.exe

6.0.6001.22691

62,464

13-May-2010

15:44

x64

Nfsnp.dll

6.0.6001.22691

71,168

13-May-2010

17:33

x64

Nfsrdr.mof

Not Applicable

4,448

26-Feb-2010

04:29

Not Applicable

Nfsrdr.sys

6.0.6001.22691

251,904

13-May-2010

15:43

x64

Nfs-clientcore-ppdlic.xrm-ms

Not Applicable

3,001

13-May-2010

18:08

Not Applicable

Nfsclnt.exe

6.0.6002.22404

63,488

13-May-2010

16:00

x64

Nfsnp.dll

6.0.6002.22404

71,168

13-May-2010

18:25

x64

Nfsrdr.mof

Not Applicable

4,448

03-Apr-2009

21:08

Not Applicable

Nfsrdr.sys

6.0.6002.22404

252,416

13-May-2010

15:59

x64

For all supported IA-64-based versions of Windows Server 2008

File name

File version

File size

Date

Time

Platform

Nfs-clientcore-ppdlic.xrm-ms

Not Applicable

3,001

13-May-2010

17:00

Not Applicable

Nfsclnt.exe

6.0.6001.22691

147,456

13-May-2010

15:28

IA-64

Nfsnp.dll

6.0.6001.22691

154,624

13-May-2010

17:15

IA-64

Nfsrdr.mof

Not Applicable

4,448

25-Feb-2010

08:02

Not Applicable

Nfsrdr.sys

6.0.6001.22691

572,416

13-May-2010

15:28

IA-64

Nfs-clientcore-ppdlic.xrm-ms

Not Applicable

3,001

13-May-2010

17:50

Not Applicable

Nfsclnt.exe

6.0.6002.22404

148,480

13-May-2010

15:48

IA-64

Nfsnp.dll

6.0.6002.22404

156,672

13-May-2010

18:10

IA-64

Nfsrdr.mof

Not Applicable

4,448

03-Apr-2009

21:08

Not Applicable

Nfsrdr.sys

6.0.6002.22404

572,928

13-May-2010

15:47

IA-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 Server 2008

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

File name

Package_1_for_kb955012~31bf3856ad364e35~x86~~6.0.1.0.mum

File version

Not Applicable

File size

1,952

Date (UTC)

14-May-2010

Time (UTC)

13:42

Platform

Not Applicable

File name

Package_2_for_kb955012~31bf3856ad364e35~x86~~6.0.1.0.mum

File version

Not Applicable

File size

1,785

Date (UTC)

14-May-2010

Time (UTC)

13:42

Platform

Not Applicable

File name

Package_3_for_kb955012~31bf3856ad364e35~x86~~6.0.1.0.mum

File version

Not Applicable

File size

1,775

Date (UTC)

14-May-2010

Time (UTC)

13:42

Platform

Not Applicable

File name

Package_4_for_kb955012~31bf3856ad364e35~x86~~6.0.1.0.mum

File version

Not Applicable

File size

2,440

Date (UTC)

14-May-2010

Time (UTC)

13:42

Platform

Not Applicable

File name

Package_5_for_kb955012~31bf3856ad364e35~x86~~6.0.1.0.mum

File version

Not Applicable

File size

2,273

Date (UTC)

14-May-2010

Time (UTC)

13:42

Platform

Not Applicable

File name

Package_6_for_kb955012~31bf3856ad364e35~x86~~6.0.1.0.mum

File version

Not Applicable

File size

2,264

Date (UTC)

14-May-2010

Time (UTC)

13:42

Platform

Not Applicable

File name

Package_for_kb955012_client_1~31bf3856ad364e35~x86~~6.0.1.0.mum

File version

Not Applicable

File size

1,367

Date (UTC)

14-May-2010

Time (UTC)

13:42

Platform

Not Applicable

File name

Package_for_kb955012_client_2~31bf3856ad364e35~x86~~6.0.1.0.mum

File version

Not Applicable

File size

1,693

Date (UTC)

14-May-2010

Time (UTC)

13:42

Platform

Not Applicable

File name

Package_for_kb955012_client~31bf3856ad364e35~x86~~6.0.1.0.mum

File version

Not Applicable

File size

1,713

Date (UTC)

14-May-2010

Time (UTC)

13:42

Platform

Not Applicable

File name

Package_for_kb955012_sc_0~31bf3856ad364e35~x86~~6.0.1.0.mum

File version

Not Applicable

File size

1,409

Date (UTC)

14-May-2010

Time (UTC)

13:42

Platform

Not Applicable

File name

Package_for_kb955012_sc_1~31bf3856ad364e35~x86~~6.0.1.0.mum

File version

Not Applicable

File size

1,690

Date (UTC)

14-May-2010

Time (UTC)

13:42

Platform

Not Applicable

File name

Package_for_kb955012_sc~31bf3856ad364e35~x86~~6.0.1.0.mum

File version

Not Applicable

File size

1,701

Date (UTC)

14-May-2010

Time (UTC)

13:42

Platform

Not Applicable

File name

Package_for_kb955012_server_0~31bf3856ad364e35~x86~~6.0.1.0.mum

File version

Not Applicable

File size

1,423

Date (UTC)

14-May-2010

Time (UTC)

13:42

Platform

Not Applicable

File name

Package_for_kb955012_server_1~31bf3856ad364e35~x86~~6.0.1.0.mum

File version

Not Applicable

File size

1,694

Date (UTC)

14-May-2010

Time (UTC)

13:42

Platform

Not Applicable

File name

Package_for_kb955012_server~31bf3856ad364e35~x86~~6.0.1.0.mum

File version

Not Applicable

File size

1,713

Date (UTC)

14-May-2010

Time (UTC)

13:42

Platform

Not Applicable

File name

X86_4a429b70f3de0206ecbc470ee1db16b0_31bf3856ad364e35_6.0.6001.22691_none_93209feeb478d1f3.manifest

File version

Not Applicable

File size

702

Date (UTC)

14-May-2010

Time (UTC)

13:42

Platform

Not Applicable

File name

X86_bd858f11a75fc3657b19b3c18a4454a2_31bf3856ad364e35_6.0.6002.22404_none_6caeacee41349d91.manifest

File version

Not Applicable

File size

702

Date (UTC)

14-May-2010

Time (UTC)

13:42

Platform

Not Applicable

File name

X86_microsoft-windows-nfs-clientcore_31bf3856ad364e35_6.0.6001.22691_none_ad0bd3fc5bf9bc81.manifest

File version

Not Applicable

File size

40,434

Date (UTC)

13-May-2010

Time (UTC)

18:55

Platform

Not Applicable

File name

X86_microsoft-windows-nfs-clientcore_31bf3856ad364e35_6.0.6002.22404_none_af5697f458d45f58.manifest

File version

Not Applicable

File size

40,434

Date (UTC)

13-May-2010

Time (UTC)

20:07

Platform

Not Applicable

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

File name

Amd64_a6eb1db28d0b3cdfbaca521a7a308b41_31bf3856ad364e35_6.0.6002.22404_none_064185ddd8da5902.manifest

File version

Not Applicable

File size

706

Date (UTC)

14-May-2010

Time (UTC)

13:42

Platform

Not Applicable

File name

Amd64_eced8ef2da0466f7d72aef363927bc53_31bf3856ad364e35_6.0.6001.22691_none_88669a17a28a3800.manifest

File version

Not Applicable

File size

706

Date (UTC)

14-May-2010

Time (UTC)

13:42

Platform

Not Applicable

File name

Amd64_microsoft-windows-nfs-clientcore_31bf3856ad364e35_6.0.6001.22691_none_092a6f8014572db7.manifest

File version

Not Applicable

File size

40,470

Date (UTC)

13-May-2010

Time (UTC)

19:14

Platform

Not Applicable

File name

Amd64_microsoft-windows-nfs-clientcore_31bf3856ad364e35_6.0.6002.22404_none_0b7533781131d08e.manifest

File version

Not Applicable

File size

40,470

Date (UTC)

13-May-2010

Time (UTC)

20:04

Platform

Not Applicable

File name

Package_1_for_kb955012~31bf3856ad364e35~amd64~~6.0.1.0.mum

File version

Not Applicable

File size

1,964

Date (UTC)

14-May-2010

Time (UTC)

13:42

Platform

Not Applicable

File name

Package_2_for_kb955012~31bf3856ad364e35~amd64~~6.0.1.0.mum

File version

Not Applicable

File size

1,795

Date (UTC)

14-May-2010

Time (UTC)

13:42

Platform

Not Applicable

File name

Package_3_for_kb955012~31bf3856ad364e35~amd64~~6.0.1.0.mum

File version

Not Applicable

File size

1,785

Date (UTC)

14-May-2010

Time (UTC)

13:42

Platform

Not Applicable

File name

Package_4_for_kb955012~31bf3856ad364e35~amd64~~6.0.1.0.mum

File version

Not Applicable

File size

2,458

Date (UTC)

14-May-2010

Time (UTC)

13:42

Platform

Not Applicable

File name

Package_5_for_kb955012~31bf3856ad364e35~amd64~~6.0.1.0.mum

File version

Not Applicable

File size

2,289

Date (UTC)

14-May-2010

Time (UTC)

13:42

Platform

Not Applicable

File name

Package_6_for_kb955012~31bf3856ad364e35~amd64~~6.0.1.0.mum

File version

Not Applicable

File size

2,280

Date (UTC)

14-May-2010

Time (UTC)

13:42

Platform

Not Applicable

File name

Package_for_kb955012_client_1~31bf3856ad364e35~amd64~~6.0.1.0.mum

File version

Not Applicable

File size

1,375

Date (UTC)

14-May-2010

Time (UTC)

13:42

Platform

Not Applicable

File name

Package_for_kb955012_client_2~31bf3856ad364e35~amd64~~6.0.1.0.mum

File version

Not Applicable

File size

1,705

Date (UTC)

14-May-2010

Time (UTC)

13:42

Platform

Not Applicable

File name

Package_for_kb955012_client~31bf3856ad364e35~amd64~~6.0.1.0.mum

File version

Not Applicable

File size

1,723

Date (UTC)

14-May-2010

Time (UTC)

13:42

Platform

Not Applicable

File name

Package_for_kb955012_sc_0~31bf3856ad364e35~amd64~~6.0.1.0.mum

File version

Not Applicable

File size

1,417

Date (UTC)

14-May-2010

Time (UTC)

13:42

Platform

Not Applicable

File name

Package_for_kb955012_sc_1~31bf3856ad364e35~amd64~~6.0.1.0.mum

File version

Not Applicable

File size

1,702

Date (UTC)

14-May-2010

Time (UTC)

13:42

Platform

Not Applicable

File name

Package_for_kb955012_sc~31bf3856ad364e35~amd64~~6.0.1.0.mum

File version

Not Applicable

File size

1,711

Date (UTC)

14-May-2010

Time (UTC)

13:42

Platform

Not Applicable

File name

Package_for_kb955012_server_0~31bf3856ad364e35~amd64~~6.0.1.0.mum

File version

Not Applicable

File size

1,431

Date (UTC)

14-May-2010

Time (UTC)

13:42

Platform

Not Applicable

File name

Package_for_kb955012_server_1~31bf3856ad364e35~amd64~~6.0.1.0.mum

File version

Not Applicable

File size

1,706

Date (UTC)

14-May-2010

Time (UTC)

13:42

Platform

Not Applicable

File name

Package_for_kb955012_server~31bf3856ad364e35~amd64~~6.0.1.0.mum

File version

Not Applicable

File size

1,723

Date (UTC)

14-May-2010

Time (UTC)

13:42

Platform

Not Applicable

Additional files for all supported IA-64-based versions of Windows Server 2008

File name

Ia64_0ac6f720cd38815dc2421164dfc10af7_31bf3856ad364e35_6.0.6002.22404_none_45cfbb2de8f145a3.manifest

File version

Not Applicable

File size

704

Date (UTC)

14-May-2010

Time (UTC)

13:42

Platform

Not Applicable

File name

Ia64_2293db5074f9b6f92abd42c5afb5e6f1_31bf3856ad364e35_6.0.6001.22691_none_77de2b9468afe38d.manifest

File version

Not Applicable

File size

704

Date (UTC)

14-May-2010

Time (UTC)

13:42

Platform

Not Applicable

File name

Ia64_microsoft-windows-nfs-clientcore_31bf3856ad364e35_6.0.6001.22691_none_ad0d77f25bf7c57d.manifest

File version

Not Applicable

File size

40,452

Date (UTC)

13-May-2010

Time (UTC)

18:38

Platform

Not Applicable

File name

Ia64_microsoft-windows-nfs-clientcore_31bf3856ad364e35_6.0.6002.22404_none_af583bea58d26854.manifest

File version

Not Applicable

File size

40,452

Date (UTC)

13-May-2010

Time (UTC)

19:36

Platform

Not Applicable

File name

Package_1_for_kb955012~31bf3856ad364e35~ia64~~6.0.1.0.mum

File version

Not Applicable

File size

1,790

Date (UTC)

14-May-2010

Time (UTC)

13:42

Platform

Not Applicable

File name

Package_2_for_kb955012~31bf3856ad364e35~ia64~~6.0.1.0.mum

File version

Not Applicable

File size

1,953

Date (UTC)

14-May-2010

Time (UTC)

13:42

Platform

Not Applicable

File name

Package_for_kb955012_server_0~31bf3856ad364e35~ia64~~6.0.1.0.mum

File version

Not Applicable

File size

1,427

Date (UTC)

14-May-2010

Time (UTC)

13:42

Platform

Not Applicable

File name

Package_for_kb955012_server_1~31bf3856ad364e35~ia64~~6.0.1.0.mum

File version

Not Applicable

File size

1,371

Date (UTC)

14-May-2010

Time (UTC)

13:42

Platform

Not Applicable

File name

Package_for_kb955012_server~31bf3856ad364e35~ia64~~6.0.1.0.mum

File version

Not Applicable

File size

1,716

Date (UTC)

14-May-2010

Time (UTC)

13:42

Platform

Not Applicable

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