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Windows stops responding if SMB v1 protocol is used to access shared files

View products that this article applies to.

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.

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Cause

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

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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=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 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.

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, SR_Level (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table:
    VersionProductMilestoneService branch
    6.1.760
    1.22xxx    		Windows 7 and Windows Server 2008 R2SP1LDR
  • 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 nameFile versionFile sizeDateTimePlatform
Mrxsmb10.sys6.1.7601.22603223,74415-Feb-201401:01x86
For all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
File nameFile versionFile sizeDateTimePlatform
Mrxsmb10.sys6.1.7601.22603288,76815-Feb-201401:16x64
For all supported IA-64-based versions of Windows Server 2008 R2
File nameFile versionFile sizeDateTimePlatform
Mrxsmb10.sys6.1.7601.22603678,91215-Feb-201400:53IA-64
Windows Vista and Windows Server 2008 file information notes
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 2008SP2LDR
  • 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 nameFile versionFile sizeDateTimePlatform
Mrxsmb10.sys6.0.6002.22406212,99218-May-201014:41x86
For all supported x64-based versions of Windows Server 2008 and of Windows Vista
File nameFile versionFile sizeDateTimePlatform
Mrxsmb10.sys6.0.6002.22406273,92018-May-201015:23x64
For all supported IA-64-based versions of Windows Server 2008
File nameFile versionFile sizeDateTimePlatform
Mrxsmb10.sys6.0.6002.22406658,43218-May-201015:07IA-64

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Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

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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

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

Additional files for all supported x86-based versions of Windows 7
File propertyValue
File nameX86_1498bc703f5a200f7e9e141852bbdd75_31bf3856ad364e35_6.1.7601.22603_none_a28bfc8656f4e87f.manifest
File versionNot applicable
File size701
Date (UTC)15-Feb-2014
Time (UTC)06:35
PlatformNot applicable
File nameX86_microsoft-windows-smb10-minirdr_31bf3856ad364e35_6.1.7601.22603_none_8b3f4b19c2c74ab3.manifest
File versionNot applicable
File size3,962
Date (UTC)15-Feb-2014
Time (UTC)02:28
PlatformNot applicable
Additional files for all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
File propertyValue
File nameAmd64_048dd9a889a0138041044cf88348a936_31bf3856ad364e35_6.1.7601.22603_none_e67803f26738d359.manifest
File versionNot applicable
File size705
Date (UTC)15-Feb-2014
Time (UTC)06:35
PlatformNot applicable
File nameAmd64_microsoft-windows-smb10-minirdr_31bf3856ad364e35_6.1.7601.22603_none_e75de69d7b24bbe9.manifest
File versionNot applicable
File size3,966
Date (UTC)15-Feb-2014
Time (UTC)02:59
PlatformNot applicable
Additional files for all supported IA-64-based versions of Windows Server 2008 R2
File propertyValue
File nameIa64_a4f2489cbf011adb71397b7b6f5d1e19_31bf3856ad364e35_6.1.7601.22603_none_b851c77352298570.manifest
File versionNot applicable
File size703
Date (UTC)15-Feb-2014
Time (UTC)06:35
PlatformNot applicable
File nameIa64_microsoft-windows-smb10-minirdr_31bf3856ad364e35_6.1.7601.22603_none_8b40ef0fc2c553af.manifest
File versionNot applicable
File size3,964
Date (UTC)15-Feb-2014
Time (UTC)02:21
PlatformNot 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 nameUpdate.mum
File versionNot applicable
File size3,068
Date (UTC)19-May-2010
Time (UTC)03:56
PlatformNot applicable
File nameX86_c75671d6f4bd0267fe0e641f00ac45be_31bf3856ad364e35_6.0.6002.22406_none_60e57377703b1050.manifest
File versionNot applicable
File size701
Date (UTC)19-May-2010
Time (UTC)03:56
PlatformNot applicable
File nameX86_microsoft-windows-smb10-minirdr_31bf3856ad364e35_6.0.6002.22406_none_8b1aa75c61ad2967.manifest
File versionNot applicable
File size7,160
Date (UTC)18-May-2010
Time (UTC)18:45
PlatformNot applicable
Additional files for all supported x64-based versions of Windows Vista and of Windows Server 2008
File nameAmd64_153a73e8f10c99bc357236fc69da0356_31bf3856ad364e35_6.0.6002.22406_none_46213b69411bffc2.manifest
File versionNot applicable
File size705
Date (UTC)19-May-2010
Time (UTC)03:56
PlatformNot applicable
File nameAmd64_microsoft-windows-smb10-minirdr_31bf3856ad364e35_6.0.6002.22406_none_e73942e01a0a9a9d.manifest
File versionNot applicable
File size7,427
Date (UTC)18-May-2010
Time (UTC)21:35
PlatformNot applicable
File nameUpdate.mum
File versionNot applicable
File size3,092
Date (UTC)19-May-2010
Time (UTC)03:56
PlatformNot applicable
Additional files for all supported IA-64-based versions of Windows Server 2008
File nameIa64_db3bc2947a5b0558cd5e437f65ffbbfa_31bf3856ad364e35_6.0.6002.22406_none_b19bb665815e43c8.manifest
File versionNot applicable
File size703
Date (UTC)19-May-2010
Time (UTC)03:56
PlatformNot applicable
File nameIa64_microsoft-windows-smb10-minirdr_31bf3856ad364e35_6.0.6002.22406_none_8b1c4b5261ab3263.manifest
File versionNot applicable
File size7,420
Date (UTC)18-May-2010
Time (UTC)22:04
PlatformNot applicable
File nameUpdate.mum
File versionNot applicable
File size2,247
Date (UTC)19-May-2010
Time (UTC)03:56
PlatformNot applicable

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Keywords: kb, kbexpertiseinter, kbqfe, kbhotfixserver, kbfix, kbsurveynew, kbautohotfix

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Article Info
Article ID : 980380
Revision : 1
Created on : 1/7/2017
Published on : 5/14/2014
Exists online : False
Views : 420