Symptoms

When you use Server Message Block (SMB) version 1 protocol to access some shared files by using a computer that is running Windows Server 2008 R2, Windows 7, Windows Server 2008, or Windows Vista, the computer stops responding under a heavy stress situation. Additionally, the computer does not recover until you force the computer to restart.

Cause

This issue occurs because of a deadlock in the Mrxsmb10.sys driver.

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 Windows 7 Service Pack 1 (SP1), Windows Server 2008 R2 SP1, Windows Vista Service Pack 2 (SP2) or Windows Server 2008 Service Pack 2 (SP2).

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 For more information about how to obtain a Windows Vista service pack, click the following article number to view the article in the Microsoft Knowledge Base:

935791 How to obtain the latest Windows Vista service pack

For more information about how to obtain a Windows Server 2008 service pack, click the following article number to view the article in the Microsoft Knowledge Base:

968849 How to obtain the latest service pack for Windows Server 2008

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 English (United States) 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.

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, 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

    Milestone

    Service branch

    6.1.760
    1.22xxx

    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 separatelyin 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 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

Mrxsmb10.sys

6.1.7601.22603

223,744

15-Feb-2014

01:01

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

Mrxsmb10.sys

6.1.7601.22603

288,768

15-Feb-2014

01:16

x64

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

File name

File version

File size

Date

Time

Platform

Mrxsmb10.sys

6.1.7601.22603

678,912

15-Feb-2014

00:53

IA-64


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.

    6.0.600
    2.
    22xxx

    Windows Vista and Windows Server 2008

    SP2

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

File name

File version

File size

Date

Time

Platform

Mrxsmb10.sys

6.0.6002.22406

212,992

18-May-2010

14:41

x86

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

File name

File version

File size

Date

Time

Platform

Mrxsmb10.sys

6.0.6002.22406

273,920

18-May-2010

15:23

x64

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

File name

File version

File size

Date

Time

Platform

Mrxsmb10.sys

6.0.6002.22406

658,432

18-May-2010

15:07

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, click the following article number to view the article in the Microsoft Knowledge Base:

976674 The computer stops responding when you access some shared files from a computer that is running Windows Server 2008 or Windows Vista

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 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_1498bc703f5a200f7e9e141852bbdd75_31bf3856ad364e35_6.1.7601.22603_none_a28bfc8656f4e87f.manifest

File version

Not applicable

File size

701

Date (UTC)

15-Feb-2014

Time (UTC)

06:35

Platform

Not applicable

File name

X86_microsoft-windows-smb10-minirdr_31bf3856ad364e35_6.1.7601.22603_none_8b3f4b19c2c74ab3.manifest

File version

Not applicable

File size

3,962

Date (UTC)

15-Feb-2014

Time (UTC)

02:28

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_048dd9a889a0138041044cf88348a936_31bf3856ad364e35_6.1.7601.22603_none_e67803f26738d359.manifest

File version

Not applicable

File size

705

Date (UTC)

15-Feb-2014

Time (UTC)

06:35

Platform

Not applicable

File name

Amd64_microsoft-windows-smb10-minirdr_31bf3856ad364e35_6.1.7601.22603_none_e75de69d7b24bbe9.manifest

File version

Not applicable

File size

3,966

Date (UTC)

15-Feb-2014

Time (UTC)

02:59

Platform

Not applicable

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

File property

Value

File name

Ia64_a4f2489cbf011adb71397b7b6f5d1e19_31bf3856ad364e35_6.1.7601.22603_none_b851c77352298570.manifest

File version

Not applicable

File size

703

Date (UTC)

15-Feb-2014

Time (UTC)

06:35

Platform

Not applicable

File name

Ia64_microsoft-windows-smb10-minirdr_31bf3856ad364e35_6.1.7601.22603_none_8b40ef0fc2c553af.manifest

File version

Not applicable

File size

3,964

Date (UTC)

15-Feb-2014

Time (UTC)

02:21

Platform

Not applicable

Additional file information for Windows Vista and for Windows Server 2008

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

File name

Update.mum

File version

Not applicable

File size

3,068

Date (UTC)

19-May-2010

Time (UTC)

03:56

Platform

Not applicable

File name

X86_c75671d6f4bd0267fe0e641f00ac45be_31bf3856ad364e35_6.0.6002.22406_none_60e57377703b1050.manifest

File version

Not applicable

File size

701

Date (UTC)

19-May-2010

Time (UTC)

03:56

Platform

Not applicable

File name

X86_microsoft-windows-smb10-minirdr_31bf3856ad364e35_6.0.6002.22406_none_8b1aa75c61ad2967.manifest

File version

Not applicable

File size

7,160

Date (UTC)

18-May-2010

Time (UTC)

18:45

Platform

Not applicable

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

File name

Amd64_153a73e8f10c99bc357236fc69da0356_31bf3856ad364e35_6.0.6002.22406_none_46213b69411bffc2.manifest

File version

Not applicable

File size

705

Date (UTC)

19-May-2010

Time (UTC)

03:56

Platform

Not applicable

File name

Amd64_microsoft-windows-smb10-minirdr_31bf3856ad364e35_6.0.6002.22406_none_e73942e01a0a9a9d.manifest

File version

Not applicable

File size

7,427

Date (UTC)

18-May-2010

Time (UTC)

21:35

Platform

Not applicable

File name

Update.mum

File version

Not applicable

File size

3,092

Date (UTC)

19-May-2010

Time (UTC)

03:56

Platform

Not applicable

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

File name

Ia64_db3bc2947a5b0558cd5e437f65ffbbfa_31bf3856ad364e35_6.0.6002.22406_none_b19bb665815e43c8.manifest

File version

Not applicable

File size

703

Date (UTC)

19-May-2010

Time (UTC)

03:56

Platform

Not applicable

File name

Ia64_microsoft-windows-smb10-minirdr_31bf3856ad364e35_6.0.6002.22406_none_8b1c4b5261ab3263.manifest

File version

Not applicable

File size

7,420

Date (UTC)

18-May-2010

Time (UTC)

22:04

Platform

Not applicable

File name

Update.mum

File version

Not applicable

File size

2,247

Date (UTC)

19-May-2010

Time (UTC)

03:56

Platform

Not applicable


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