Symptoms

This issue occurs when the following conditions are true:

  • You have a network-attached storage device that supports Server Message Block (SMB) protocol version 2.1 and contains a shared folder.

  • You connect to the NAS shared folder by using a Universal Naming Convention (UNC) path, such as \\ServerName\ShareFolder, and you access a file from a computer that's running Windows 7 or Windows Server 2008 R2.

  • You have disabled the offline files feature on the share and cleared Always offline available in Sync Center.

If the network-attached storage device is turned off, you don't receive error messages when you try to access files on the share. Files that you previously accessed are pinned offline, and are available through client-side caching in Sync Center.

Resolution

To fix this issue, we have released a hotfix for Windows 7 and Windows Server 2008 R2.

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, you must have Service Pack 1 installed in Windows 7 or Windows Server 2008 R2.

Registry information

To use the hotfix in this package, 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.

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 and 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's 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:

    Version

    Product

    Milestone

    Service branch

    6.1.760 1.17xxx

    Windows 7 and Windows Server 2008 R2

    SP1

    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 separately 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 aren't 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

Mrxsmb20.sys

6.1.7601.18950

98,304

04-Aug-2015

16:41

x86

Mrxsmb20.sys

6.1.7601.23153

98,304

04-Aug-2015

16:45

x86

Mrxsmb.sys

6.1.7601.18950

124,416

04-Aug-2015

16:41

x86

Mrxsmb.sys

6.1.7601.23153

124,928

04-Aug-2015

16:45

x86

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

File name

File version

File size

Date

Time

Platform

Mrxsmb20.sys

6.1.7601.18950

129,024

04-Aug-2015

16:42

x64

Mrxsmb20.sys

6.1.7601.23153

129,536

04-Aug-2015

16:54

x64

Mrxsmb.sys

6.1.7601.18950

159,232

04-Aug-2015

16:43

x64

Mrxsmb.sys

6.1.7601.23153

159,744

04-Aug-2015

16:54

x64

For all supported IA-64-based versions of Windows Server 2008 R2

File name

File version

File size

Date

Time

Platform

Mrxsmb20.sys

6.1.7601.18950

314,368

04-Aug-2015

16:09

IA-64

Mrxsmb20.sys

6.1.7601.23153

315,392

04-Aug-2015

16:13

IA-64

Mrxsmb.sys

6.1.7601.18950

370,688

04-Aug-2015

16:09

IA-64

Mrxsmb.sys

6.1.7601.23153

371,712

04-Aug-2015

16:13

IA-64

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 property

Value

File name

X86_1f2c14c33e8a54721dca60bb4bd5a357_31bf3856ad364e35_6.1.7601.23153_none_52c6042656a57966.manifest

File version

Not applicable

File size

1,043

Date (UTC)

05-Aug-2015

Time (UTC)

21:25

Platform

Not applicable

File name

X86_9ebed75b3d6ee52edc25937869a13f20_31bf3856ad364e35_6.1.7601.18950_none_6457497be9e6c4c6.manifest

File version

Not applicable

File size

1,043

Date (UTC)

05-Aug-2015

Time (UTC)

21:25

Platform

Not applicable

File name

X86_microsoft-windows-smb20-minirdr_31bf3856ad364e35_6.1.7601.18950_none_8cb30f7ee82c12a6.manifest

File version

Not applicable

File size

4,035

Date (UTC)

04-Aug-2015

Time (UTC)

18:15

Platform

Not applicable

File name

X86_microsoft-windows-smb20-minirdr_31bf3856ad364e35_6.1.7601.23153_none_8d3f854a014731b7.manifest

File version

Not applicable

File size

4,035

Date (UTC)

04-Aug-2015

Time (UTC)

18:21

Platform

Not applicable

File name

X86_microsoft-windows-smbminirdr_31bf3856ad364e35_6.1.7601.18950_none_81698718af83a0d3.manifest

File version

Not applicable

File size

4,709

Date (UTC)

04-Aug-2015

Time (UTC)

18:12

Platform

Not applicable

File name

X86_microsoft-windows-smbminirdr_31bf3856ad364e35_6.1.7601.23153_none_81f5fce3c89ebfe4.manifest

File version

Not applicable

File size

4,709

Date (UTC)

04-Aug-2015

Time (UTC)

18:19

Platform

Not applicable

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

File property

Value

File name

Amd64_70df2e6d07d9e10f1293adf1af75c525_31bf3856ad364e35_6.1.7601.23153_none_d9b43ab1841be4e3.manifest

File version

Not applicable

File size

1,049

Date (UTC)

05-Aug-2015

Time (UTC)

21:25

Platform

Not applicable

File name

Amd64_a46438a8de510a05faf28ae4ac480f60_31bf3856ad364e35_6.1.7601.18950_none_61e64b924941fd70.manifest

File version

Not applicable

File size

1,049

Date (UTC)

05-Aug-2015

Time (UTC)

21:25

Platform

Not applicable

File name

Amd64_microsoft-windows-smb20-minirdr_31bf3856ad364e35_6.1.7601.18950_none_e8d1ab02a08983dc.manifest

File version

Not applicable

File size

4,039

Date (UTC)

04-Aug-2015

Time (UTC)

18:29

Platform

Not applicable

File name

Amd64_microsoft-windows-smb20-minirdr_31bf3856ad364e35_6.1.7601.23153_none_e95e20cdb9a4a2ed.manifest

File version

Not applicable

File size

4,039

Date (UTC)

04-Aug-2015

Time (UTC)

18:47

Platform

Not applicable

File name

Amd64_microsoft-windows-smbminirdr_31bf3856ad364e35_6.1.7601.18950_none_dd88229c67e11209.manifest

File version

Not applicable

File size

4,713

Date (UTC)

04-Aug-2015

Time (UTC)

18:26

Platform

Not applicable

File name

Amd64_microsoft-windows-smbminirdr_31bf3856ad364e35_6.1.7601.23153_none_de14986780fc311a.manifest

File version

Not applicable

File size

4,713

Date (UTC)

04-Aug-2015

Time (UTC)

18:43

Platform

Not applicable

Additional files for all supported IA-64-based versions of Windows Server 2008 R2

File property

Value

File name

Ia64_ed6e389b6787c999b860c04981b283a0_31bf3856ad364e35_6.1.7601.23153_none_7b183b7341838089.manifest

File version

Not applicable

File size

1,046

Date (UTC)

05-Aug-2015

Time (UTC)

21:25

Platform

Not applicable

File name

Ia64_f7ee1b772b4bf7c132bc7931bce0a492_31bf3856ad364e35_6.1.7601.18950_none_a9f0b29d62c54688.manifest

File version

Not applicable

File size

1,046

Date (UTC)

05-Aug-2015

Time (UTC)

21:25

Platform

Not applicable

File name

Ia64_microsoft-windows-smb20-minirdr_31bf3856ad364e35_6.1.7601.18950_none_8cb4b374e82a1ba2.manifest

File version

Not applicable

File size

4,037

Date (UTC)

04-Aug-2015

Time (UTC)

18:08

Platform

Not applicable

File name

Ia64_microsoft-windows-smb20-minirdr_31bf3856ad364e35_6.1.7601.23153_none_8d41294001453ab3.manifest

File version

Not applicable

File size

4,037

Date (UTC)

04-Aug-2015

Time (UTC)

18:12

Platform

Not applicable

File name

Ia64_microsoft-windows-smbminirdr_31bf3856ad364e35_6.1.7601.18950_none_816b2b0eaf81a9cf.manifest

File version

Not applicable

File size

4,711

Date (UTC)

04-Aug-2015

Time (UTC)

18:05

Platform

Not applicable

File name

Ia64_microsoft-windows-smbminirdr_31bf3856ad364e35_6.1.7601.23153_none_81f7a0d9c89cc8e0.manifest

File version

Not applicable

File size

4,711

Date (UTC)

04-Aug-2015

Time (UTC)

18:09

Platform

Not applicable



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.

ia64 Windows 7/Windows Server2008 R2 SP1

File name

File version

File size

Date

Time

Platform

Mrxsmb20.sys

6.1.7601.18950

314,368

04-Aug-2015

16:09

IA-64

Mrxsmb20.sys

6.1.7601.23153

315,392

04-Aug-2015

16:13

IA-64

Mrxsmb.sys

6.1.7601.18950

370,688

04-Aug-2015

16:09

IA-64

Mrxsmb.sys

6.1.7601.23153

371,712

04-Aug-2015

16:13

IA-64

x64 Windows 7/Windows Server2008 R2 SP1

File name

File version

File size

Date

Time

Platform

Mrxsmb20.sys

6.1.7601.18950

129,024

04-Aug-2015

16:42

x64

Mrxsmb20.sys

6.1.7601.23153

129,536

04-Aug-2015

16:54

x64

Mrxsmb.sys

6.1.7601.18950

159,232

04-Aug-2015

16:43

x64

Mrxsmb.sys

6.1.7601.23153

159,744

04-Aug-2015

16:54

x64

x86 Windows 7/Windows Server2008 R2 SP1

File name

File version

File size

Date

Time

Platform

Mrxsmb20.sys

6.1.7601.18950

98,304

04-Aug-2015

16:41

x86

Mrxsmb20.sys

6.1.7601.23153

98,304

04-Aug-2015

16:45

x86

Mrxsmb.sys

6.1.7601.18950

124,416

04-Aug-2015

16:41

x86

Mrxsmb.sys

6.1.7601.23153

124,928

04-Aug-2015

16:45

x86


ia64 Windows 7/Windows Server2008 R2 SP1

File property

Value

File name

Ia64_ed6e389b6787c999b860c04981b283a0_31bf3856ad364e35_6.1.7601.23153_none_7b183b7341838089.manifest

File version

Not applicable

File size

1,046

Date (UTC)

05-Aug-2015

Time (UTC)

21:25

Platform

Not applicable

File name

Ia64_f7ee1b772b4bf7c132bc7931bce0a492_31bf3856ad364e35_6.1.7601.18950_none_a9f0b29d62c54688.manifest

File version

Not applicable

File size

1,046

Date (UTC)

05-Aug-2015

Time (UTC)

21:25

Platform

Not applicable

File name

Ia64_microsoft-windows-smb20-minirdr_31bf3856ad364e35_6.1.7601.18950_none_8cb4b374e82a1ba2.manifest

File version

Not applicable

File size

4,037

Date (UTC)

04-Aug-2015

Time (UTC)

18:08

Platform

Not applicable

File name

Ia64_microsoft-windows-smb20-minirdr_31bf3856ad364e35_6.1.7601.23153_none_8d41294001453ab3.manifest

File version

Not applicable

File size

4,037

Date (UTC)

04-Aug-2015

Time (UTC)

18:12

Platform

Not applicable

File name

Ia64_microsoft-windows-smbminirdr_31bf3856ad364e35_6.1.7601.18950_none_816b2b0eaf81a9cf.manifest

File version

Not applicable

File size

4,711

Date (UTC)

04-Aug-2015

Time (UTC)

18:05

Platform

Not applicable

File name

Ia64_microsoft-windows-smbminirdr_31bf3856ad364e35_6.1.7601.23153_none_81f7a0d9c89cc8e0.manifest

File version

Not applicable

File size

4,711

Date (UTC)

04-Aug-2015

Time (UTC)

18:09

Platform

Not applicable

File name

Update.mum

File version

Not applicable

File size

1,447

Date (UTC)

05-Aug-2015

Time (UTC)

21:25

Platform

Not applicable

x64 Windows 7/Windows Server2008 R2 SP1

File property

Value

File name

Amd64_70df2e6d07d9e10f1293adf1af75c525_31bf3856ad364e35_6.1.7601.23153_none_d9b43ab1841be4e3.manifest

File version

Not applicable

File size

1,049

Date (UTC)

05-Aug-2015

Time (UTC)

21:25

Platform

Not applicable

File name

Amd64_a46438a8de510a05faf28ae4ac480f60_31bf3856ad364e35_6.1.7601.18950_none_61e64b924941fd70.manifest

File version

Not applicable

File size

1,049

Date (UTC)

05-Aug-2015

Time (UTC)

21:25

Platform

Not applicable

File name

Amd64_microsoft-windows-smb20-minirdr_31bf3856ad364e35_6.1.7601.18950_none_e8d1ab02a08983dc.manifest

File version

Not applicable

File size

4,039

Date (UTC)

04-Aug-2015

Time (UTC)

18:29

Platform

Not applicable

File name

Amd64_microsoft-windows-smb20-minirdr_31bf3856ad364e35_6.1.7601.23153_none_e95e20cdb9a4a2ed.manifest

File version

Not applicable

File size

4,039

Date (UTC)

04-Aug-2015

Time (UTC)

18:47

Platform

Not applicable

File name

Amd64_microsoft-windows-smbminirdr_31bf3856ad364e35_6.1.7601.18950_none_dd88229c67e11209.manifest

File version

Not applicable

File size

4,713

Date (UTC)

04-Aug-2015

Time (UTC)

18:26

Platform

Not applicable

File name

Amd64_microsoft-windows-smbminirdr_31bf3856ad364e35_6.1.7601.23153_none_de14986780fc311a.manifest

File version

Not applicable

File size

4,713

Date (UTC)

04-Aug-2015

Time (UTC)

18:43

Platform

Not applicable

File name

Update.mum

File version

Not applicable

File size

2,352

Date (UTC)

05-Aug-2015

Time (UTC)

21:25

Platform

Not applicable

x86 Windows 7/Windows Server2008 R2 SP1

File property

Value

File name

Update.mum

File version

Not applicable

File size

2,138

Date (UTC)

05-Aug-2015

Time (UTC)

21:25

Platform

Not applicable

File name

X86_1f2c14c33e8a54721dca60bb4bd5a357_31bf3856ad364e35_6.1.7601.23153_none_52c6042656a57966.manifest

File version

Not applicable

File size

1,043

Date (UTC)

05-Aug-2015

Time (UTC)

21:25

Platform

Not applicable

File name

X86_9ebed75b3d6ee52edc25937869a13f20_31bf3856ad364e35_6.1.7601.18950_none_6457497be9e6c4c6.manifest

File version

Not applicable

File size

1,043

Date (UTC)

05-Aug-2015

Time (UTC)

21:25

Platform

Not applicable

File name

X86_microsoft-windows-smb20-minirdr_31bf3856ad364e35_6.1.7601.18950_none_8cb30f7ee82c12a6.manifest

File version

Not applicable

File size

4,035

Date (UTC)

04-Aug-2015

Time (UTC)

18:15

Platform

Not applicable

File name

X86_microsoft-windows-smb20-minirdr_31bf3856ad364e35_6.1.7601.23153_none_8d3f854a014731b7.manifest

File version

Not applicable

File size

4,035

Date (UTC)

04-Aug-2015

Time (UTC)

18:21

Platform

Not applicable

File name

X86_microsoft-windows-smbminirdr_31bf3856ad364e35_6.1.7601.18950_none_81698718af83a0d3.manifest

File version

Not applicable

File size

4,709

Date (UTC)

04-Aug-2015

Time (UTC)

18:12

Platform

Not applicable

File name

X86_microsoft-windows-smbminirdr_31bf3856ad364e35_6.1.7601.23153_none_81f5fce3c89ebfe4.manifest

File version

Not applicable

File size

4,709

Date (UTC)

04-Aug-2015

Time (UTC)

18:19

Platform

Not applicable


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.

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