FIX: Message Queuing may become unresponsive in Windows 7 or in Windows Server 2008 R2

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Article ID: 2028997 - View products that this article applies to.
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SYMPTOMS

You install Microsoft Message Queuing (MSMQ) Server on a computer that is running Windows 7 or that is running Windows Server 2008 R2. In this situation, when you perform lots of remote reads on the MSMQ server for some time by using another computer, MSMQ may become unresponsive and stop processing. Additionally, the mqsvc.exe process consumes high CPU usage.

CAUSE

This issue occurs because of an error in the Mqqm.dll file. When multiple threads try to open remote queues at the same time, MSMQ Queue Manager may set a timer on a scheduler item two times.

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 or Windows Server 2008 R2. Additionally, you must have Microsoft Message Queuing (MSMQ) Server feature installed.

Registry information

To use the hotfix, 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
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 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 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 7
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Mqqm.dll6.1.7600.20716933,88821-May-201005:06x86
For all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Mqqm.dll6.1.7600.207161,516,03221-May-201005:55x64
For all supported IA-64-based versions of Windows Server 2008 R2
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Mqqm.dll6.1.7600.207163,011,58421-May-201004:34IA-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 how to install Message Queuing, view the following Microsoft Tech website:
Install Message Queuing
For more information about the MSMQ adapter, visit the following Microsoft Developer Network (MSDN) web site:
General information about the MSMQ adapter
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
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File nameUpdate.mum
File versionNot applicable
File size1,617
Date (UTC)21-May-2010
Time (UTC)12:52
File nameX86_1760af161a9d8397eaf8998c33533e94_31bf3856ad364e35_6.1.7600.20716_none_acdc104a9a179d3f.manifest
File versionNot applicable
File size710
Date (UTC)21-May-2010
Time (UTC)12:52
File nameX86_microsoft-windows-msmq-queuemanager-core_31bf3856ad364e35_6.1.7600.20716_none_80648c02d9d1279b.manifest
File versionNot applicable
File size2,742
Date (UTC)21-May-2010
Time (UTC)06:12
Additional files for all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
Collapse this tableExpand this table
File nameAmd64_e4d25dd1ad87826a83baafa93b0cf9fe_31bf3856ad364e35_6.1.7600.20716_none_704c218bdc5841f6.manifest
File versionNot applicable
File size714
Date (UTC)21-May-2010
Time (UTC)12:52
File nameAmd64_microsoft-windows-msmq-queuemanager-core_31bf3856ad364e35_6.1.7600.20716_none_dc832786922e98d1.manifest
File versionNot applicable
File size2,746
Date (UTC)21-May-2010
Time (UTC)08:24
File nameUpdate.mum
File versionNot applicable
File size1,828
Date (UTC)21-May-2010
Time (UTC)12:52
Additional files for all supported IA-64-based versions of Windows Server 2008 R2
Collapse this tableExpand this table
File nameIa64_19095119f3543478f86e24396d4883de_31bf3856ad364e35_6.1.7600.20716_none_e486bcb10f265879.manifest
File versionNot applicable
File size712
Date (UTC)21-May-2010
Time (UTC)12:52
File nameIa64_microsoft-windows-msmq-queuemanager-core_31bf3856ad364e35_6.1.7600.20716_none_80662ff8d9cf3097.manifest
File versionNot applicable
File size2,744
Date (UTC)21-May-2010
Time (UTC)06:32
File nameUpdate.mum
File versionNot applicable
File size1,453
Date (UTC)21-May-2010
Time (UTC)12:52

Properties

Article ID: 2028997 - Last Review: June 28, 2010 - Revision: 1.0
APPLIES TO
  • Windows Server 2008 R2 Datacenter
  • Windows Server 2008 R2 Enterprise
  • Windows Server 2008 R2 Standard
  • Windows 7 Enterprise
  • Windows 7 Home Basic
  • Windows 7 Home Premium
  • Windows 7 Professional
  • Windows 7 Starter
  • Windows 7 Ultimate
Keywords: 
kbautohotfix kbqfe kbhotfixserver kbfix kbsurveynew kbexpertiseadvanced KB2028997

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