Symptoms

Consider the following scenario:

  • You have a Distributed File System Namespace (DFSN) that consists of two file servers.

    Note The file servers can be either Windows-based or third party-based. For example, the file servers can be Windows Server 2008 R2-based servers or Samba servers.

  • You create a share on each file server.

  • You select the No files or programs from the shared folder are available offline option in the Properties dialog box of each share folder if the file servers are Windows-based and support the Offline Files feature.

    Note This operation prevents the client computers from performing offline caching on the contents of each share folder.

  • You create a new DFS folder within the DFSN, and then you add the UNC paths of the two shares as the targets of the DFS folder.

  • You enable Client-Side Caching (CSC) on a client computer that is running Windows 7 or Windows Server 2008 R2.

  • You try to browse the DFS folder by using Windows Explorer on the client computer.

In this situation, you receive the following error message intermittently:


An unexpected network error occurred


Additionally, when you open a sub folder, Windows Explorer either does not display the contents of the folder or jumps to the parent folder. This behavior occurs if you have several levels of folders in the share.

If you copy files from the DFS folder to the client computer, you receive the following error message:


0x8007003b, An unexpected network error occurred.


Note This issue does not occur if CSC is disabled on the client computer.

Resolution

To resolve this issue, install the hotfix on the client computer that is running Windows 7 or Windows Server 2008 R2.

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=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 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 the hotfix in this package, 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


  • 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

    6.1.760
    0.21xxx

    Windows 7 and Windows Server 2008 R2

    RTM

    LDR

    6.1.760
    1.21xxx

    Windows 7 and Windows Server 2008 R2

    SP1

    LDR

  • 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 R2 and for Windows 7" section. MUM 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 7

File name

File version

File size

Date

Time

Platform

Cscapi.dll

6.1.7600.21110

34,816

20-Dec-2011

05:34

x86

Cscdll.dll

6.1.7600.21110

23,040

20-Dec-2011

05:34

x86

Cscapi.dll

6.1.7601.21880

34,816

20-Dec-2011

07:00

x86

Cscdll.dll

6.1.7601.21880

23,040

20-Dec-2011

07:00

x86

Csc.sys

6.1.7600.21110

387,584

20-Dec-2011

03:27

x86

Cscmig.dll

6.1.7600.21110

109,568

20-Dec-2011

05:34

x86

Microsoft-windows-offlinefiles-core-ppdlic.xrm-ms

Not Applicable

3,144

20-Dec-2011

05:54

Not Applicable

Csc.sys

6.1.7601.21880

388,096

20-Dec-2011

04:15

x86

Cscmig.dll

6.1.7601.21880

109,568

20-Dec-2011

07:00

x86

Microsoft-windows-offlinefiles-core-ppdlic.xrm-ms

Not Applicable

3,144

20-Dec-2011

07:21

Not Applicable

Cscsvc.dll

6.1.7600.21110

546,816

20-Dec-2011

05:34

x86

Microsoft-windows-offlinefiles.mof

Not Applicable

1,776

19-Dec-2011

23:58

Not Applicable

Cscsvc.dll

6.1.7601.21880

547,328

20-Dec-2011

07:00

x86

Microsoft-windows-offlinefiles.mof

Not Applicable

1,776

20-Dec-2011

00:01

Not Applicable

For all supported x64-based versions of Windows 7 and of Windows Server 2008 R2

File name

File version

File size

Date

Time

Platform

Cscapi.dll

6.1.7600.21110

46,080

20-Dec-2011

06:26

x64

Cscdll.dll

6.1.7600.21110

30,208

20-Dec-2011

06:26

x64

Cscapi.dll

6.1.7601.21880

46,080

20-Dec-2011

06:16

x64

Cscdll.dll

6.1.7601.21880

30,208

20-Dec-2011

06:16

x64

Csc.sys

6.1.7600.21110

513,536

20-Dec-2011

03:47

x64

Cscmig.dll

6.1.7600.21110

137,216

20-Dec-2011

06:26

x64

Microsoft-windows-offlinefiles-core-ppdlic.xrm-ms

Not Applicable

3,144

20-Dec-2011

06:47

Not Applicable

Csc.sys

6.1.7601.21880

515,072

20-Dec-2011

03:35

x64

Cscmig.dll

6.1.7601.21880

137,216

20-Dec-2011

06:16

x64

Microsoft-windows-offlinefiles-core-ppdlic.xrm-ms

Not Applicable

3,144

20-Dec-2011

06:34

Not Applicable

Cscsvc.dll

6.1.7600.21110

693,248

20-Dec-2011

06:26

x64

Microsoft-windows-offlinefiles.mof

Not Applicable

1,776

19-Dec-2011

23:57

Not Applicable

Cscsvc.dll

6.1.7601.21880

693,248

20-Dec-2011

06:16

x64

Microsoft-windows-offlinefiles.mof

Not Applicable

1,776

19-Dec-2011

23:52

Not Applicable

Cscapi.dll

6.1.7600.21110

34,816

20-Dec-2011

05:34

x86

Cscdll.dll

6.1.7600.21110

23,040

20-Dec-2011

05:34

x86

Cscapi.dll

6.1.7601.21880

34,816

20-Dec-2011

07:00

x86

Cscdll.dll

6.1.7601.21880

23,040

20-Dec-2011

07:00

x86

Workaround

To work around this issue, use the following command to disable CSC:

wmic path win32_offlinfilescache call enable false

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 DFS, visit the following Microsoft website:

General information to DFSFor 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

File name

X86_47246d2666f60185913a9a5414138f32_31bf3856ad364e35_6.1.7601.21880_none_337bddf46b85ad85.manifest

File version

Not Applicable

File size

1,057

Date (UTC)

20-Dec-2011

Time (UTC)

16:59

Platform

Not Applicable

File name

X86_9f940dbb04aa8a2e1b03bca689fbc73c_31bf3856ad364e35_6.1.7601.21880_none_d2c6b5979a502e9e.manifest

File version

Not Applicable

File size

711

Date (UTC)

20-Dec-2011

Time (UTC)

16:59

Platform

Not Applicable

File name

X86_d3cb11aab9d8c4d8d35d4a9a75cfb2b2_31bf3856ad364e35_6.1.7600.21110_none_a1551e160da01fda.manifest

File version

Not Applicable

File size

1,057

Date (UTC)

20-Dec-2011

Time (UTC)

16:59

Platform

Not Applicable

File name

X86_ff0649827e9826515c6f771a38b84d67_31bf3856ad364e35_6.1.7600.21110_none_7794d180e8890ed4.manifest

File version

Not Applicable

File size

711

Date (UTC)

20-Dec-2011

Time (UTC)

16:59

Platform

Not Applicable

File name

X86_microsoft-windows-o..inefiles-win32-apis_31bf3856ad364e35_6.1.7600.21110_none_ac117e4773624f0d.manifest

File version

Not Applicable

File size

3,017

Date (UTC)

20-Dec-2011

Time (UTC)

06:09

Platform

Not Applicable

File name

X86_microsoft-windows-o..inefiles-win32-apis_31bf3856ad364e35_6.1.7601.21880_none_adac53b770c14b4e.manifest

File version

Not Applicable

File size

3,017

Date (UTC)

20-Dec-2011

Time (UTC)

07:35

Platform

Not Applicable

File name

X86_microsoft-windows-offlinefiles-core_31bf3856ad364e35_6.1.7600.21110_none_9eeecd5dd6245f33.manifest

File version

Not Applicable

File size

11,592

Date (UTC)

20-Dec-2011

Time (UTC)

06:09

Platform

Not Applicable

File name

X86_microsoft-windows-offlinefiles-core_31bf3856ad364e35_6.1.7601.21880_none_a089a2cdd3835b74.manifest

File version

Not Applicable

File size

11,592

Date (UTC)

20-Dec-2011

Time (UTC)

07:35

Platform

Not Applicable

File name

X86_microsoft-windows-offlinefiles-service_31bf3856ad364e35_6.1.7600.21110_none_0a7a1680db9d5997.manifest

File version

Not Applicable

File size

56,703

Date (UTC)

20-Dec-2011

Time (UTC)

06:11

Platform

Not Applicable

File name

X86_microsoft-windows-offlinefiles-service_31bf3856ad364e35_6.1.7601.21880_none_0c14ebf0d8fc55d8.manifest

File version

Not Applicable

File size

56,703

Date (UTC)

20-Dec-2011

Time (UTC)

07:40

Platform

Not Applicable

Additional files for all supported x64-based versions of Windows 7 and of Windows Server 2008 R2

File name

Amd64_3ecd44d529d039ca9b07fc9608106780_31bf3856ad364e35_6.1.7600.21110_none_c60a67d9be46e6b1.manifest

File version

Not Applicable

File size

1,063

Date (UTC)

20-Dec-2011

Time (UTC)

16:59

Platform

Not Applicable

File name

Amd64_4bd0994aa18dc8fa964e20ad61b3dc67_31bf3856ad364e35_6.1.7601.21880_none_d5fcab12e9315cf5.manifest

File version

Not Applicable

File size

1,070

Date (UTC)

20-Dec-2011

Time (UTC)

16:59

Platform

Not Applicable

File name

Amd64_5bdddf865b99c007b7224dc233ee5ad6_31bf3856ad364e35_6.1.7601.21880_none_21770b3cb4715bd1.manifest

File version

Not Applicable

File size

715

Date (UTC)

20-Dec-2011

Time (UTC)

16:59

Platform

Not Applicable

File name

Amd64_66b9afa21b10c6fdf0d4366190b31d8c_31bf3856ad364e35_6.1.7601.21880_none_28d382d5c48f9439.manifest

File version

Not Applicable

File size

1,063

Date (UTC)

20-Dec-2011

Time (UTC)

16:59

Platform

Not Applicable

File name

Amd64_9f940dbb04aa8a2e1b03bca689fbc73c_31bf3856ad364e35_6.1.7601.21880_none_2ee5511b52ad9fd4.manifest

File version

Not Applicable

File size

713

Date (UTC)

20-Dec-2011

Time (UTC)

16:59

Platform

Not Applicable

File name

Amd64_adc48635690ac974998d31d55fc99dc8_31bf3856ad364e35_6.1.7600.21110_none_fb3f3c14a891a14d.manifest

File version

Not Applicable

File size

715

Date (UTC)

20-Dec-2011

Time (UTC)

16:59

Platform

Not Applicable

File name

Amd64_c656d8ac210060c63409cb20a4c5f41b_31bf3856ad364e35_6.1.7600.21110_none_9a4cf2c4072b8513.manifest

File version

Not Applicable

File size

1,070

Date (UTC)

20-Dec-2011

Time (UTC)

16:59

Platform

Not Applicable

File name

Amd64_ff0649827e9826515c6f771a38b84d67_31bf3856ad364e35_6.1.7600.21110_none_d3b36d04a0e6800a.manifest

File version

Not Applicable

File size

713

Date (UTC)

20-Dec-2011

Time (UTC)

16:59

Platform

Not Applicable

File name

Amd64_microsoft-windows-o..inefiles-win32-apis_31bf3856ad364e35_6.1.7600.21110_none_083019cb2bbfc043.manifest

File version

Not Applicable

File size

3,019

Date (UTC)

20-Dec-2011

Time (UTC)

07:00

Platform

Not Applicable

File name

Amd64_microsoft-windows-o..inefiles-win32-apis_31bf3856ad364e35_6.1.7601.21880_none_09caef3b291ebc84.manifest

File version

Not Applicable

File size

3,019

Date (UTC)

20-Dec-2011

Time (UTC)

08:10

Platform

Not Applicable

File name

Amd64_microsoft-windows-offlinefiles-core_31bf3856ad364e35_6.1.7600.21110_none_fb0d68e18e81d069.manifest

File version

Not Applicable

File size

11,596

Date (UTC)

20-Dec-2011

Time (UTC)

07:00

Platform

Not Applicable

File name

Amd64_microsoft-windows-offlinefiles-core_31bf3856ad364e35_6.1.7601.21880_none_fca83e518be0ccaa.manifest

File version

Not Applicable

File size

11,596

Date (UTC)

20-Dec-2011

Time (UTC)

08:09

Platform

Not Applicable

File name

Amd64_microsoft-windows-offlinefiles-service_31bf3856ad364e35_6.1.7600.21110_none_6698b20493facacd.manifest

File version

Not Applicable

File size

56,710

Date (UTC)

20-Dec-2011

Time (UTC)

07:05

Platform

Not Applicable

File name

Amd64_microsoft-windows-offlinefiles-service_31bf3856ad364e35_6.1.7601.21880_none_683387749159c70e.manifest

File version

Not Applicable

File size

56,710

Date (UTC)

20-Dec-2011

Time (UTC)

08:14

Platform

Not Applicable

File name

X86_microsoft-windows-o..inefiles-win32-apis_31bf3856ad364e35_6.1.7600.21110_none_ac117e4773624f0d.manifest

File version

Not Applicable

File size

3,017

Date (UTC)

20-Dec-2011

Time (UTC)

06:09

Platform

Not Applicable

File name

X86_microsoft-windows-o..inefiles-win32-apis_31bf3856ad364e35_6.1.7601.21880_none_adac53b770c14b4e.manifest

File version

Not Applicable

File size

3,017

Date (UTC)

20-Dec-2011

Time (UTC)

07:35

Platform

Not Applicable

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