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Article ID: 2685909 - Last Review: May 25, 2012 - Revision: 2.0

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SYMPTOMS

Consider the following scenario:
  • You start a Remote Desktop session to a computer that is running Windows Server 2008 R2 and that has the Remote Desktop Services role installed.
  • You remotely control (or "shadow") a different Remote Desktop session by using the Remote Desktop Services Manager Microsoft Management Console (MMC) snap-in. 
In this scenario, the CPU usage for the Remote Desktop Services Manager MMC snap-in increases to 100 percent.

Note This issue can also occur on a computer that is running Windows 7 and that has the Remote Server Administration Tools feature installed. When the issue occurs, the CPU usage for the Server Manager MMC snap-in increases to 100 percent.

CAUSE

This issue occurs because there are messages in the message queue to be processed by the UI thread when the Remotecontrol option is clicked. However, the message queue is shared across threads, and other threads cannot process the messages. 

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 website:
http://support.microsoft.com/contactus/?ws=support (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 one of the following operating systems. Additionally, you must have the Remote Desktop Services role installed on the computer that is running Windows Server 2008 R2 or have the Remote Server Administration Tools feature on the computer that is running Windows 7.
  • 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  (http://support.microsoft.com/kb/976932/ ) Information about Service Pack 1 for Windows 7 and for Windows Server 2008 R2

Registry information

To use 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
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, milestone (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table:
    Collapse this tableExpand this table
    VersionProductMilestoneService branch
    6.1.760 0.21xxxWindows 7 and Windows Server 2008 R2RTMLDR
    6.1.760 1.21xxxWindows 7 and Windows Server 2008 R2SP1LDR
  • 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 7 and for Windows Server 2008 R2" section. MUM and MANIFEST files, and the associated security catalog (.cat) files, are critical 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
Tsadmin.dll6.1.7600.21177450,56029-Mar-201204:56x86
Tsadmin.dll6.1.7601.21953450,56029-Mar-201205:17x86
For all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Tsadmin.dll6.1.7600.21177450,56029-Mar-201205:38x64
Tsadmin.dll6.1.7601.21953450,56029-Mar-201219:38x64
For all supported IA-64-based versions of Windows Server 2008 R2
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Tsadmin.dll6.1.7600.21177450,56029-Mar-201204:29IA-64
Tsadmin.dll6.1.7601.21953450,56029-Mar-201204:25IA-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 software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
824684  (http://support.microsoft.com/kb/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
Collapse this tableExpand this table
File nameX86_5dccb495988700aa6a5d312ce69709dc_31bf3856ad364e35_6.1.7600.21177_none_8c09b372cfdf7606.manifest
File versionNot applicable
File size727
Date (UTC)29-Mar-2012
Time (UTC)23:23
PlatformNot applicable
File nameX86_abab6769c7617364aff561bd6291e6cc_31bf3856ad364e35_6.1.7601.21953_none_d1b1b861dfed65f5.manifest
File versionNot applicable
File size727
Date (UTC)29-Mar-2012
Time (UTC)23:23
PlatformNot applicable
File nameX86_microsoft-windows-t..ager-snapin-nonmsil_31bf3856ad364e35_6.1.7600.21177_none_8c44ad211d13fd71.manifest
File versionNot applicable
File size10,897
Date (UTC)29-Mar-2012
Time (UTC)05:18
PlatformNot applicable
File nameX86_microsoft-windows-t..ager-snapin-nonmsil_31bf3856ad364e35_6.1.7601.21953_none_8e3cd29b1a2d9604.manifest
File versionNot applicable
File size10,897
Date (UTC)29-Mar-2012
Time (UTC)05:42
PlatformNot applicable
Additional files for all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
Collapse this tableExpand this table
File nameAmd64_5dccb495988700aa6a5d312ce69709dc_31bf3856ad364e35_6.1.7600.21177_none_e8284ef6883ce73c.manifest
File versionNot applicable
File size729
Date (UTC)29-Mar-2012
Time (UTC)23:23
PlatformNot applicable
File nameAmd64_749a9a9eef1cb88feacc5d3b08cc8157_31bf3856ad364e35_6.1.7601.21953_none_cd303bda34be5edd.manifest
File versionNot applicable
File size731
Date (UTC)29-Mar-2012
Time (UTC)23:23
PlatformNot applicable
File nameAmd64_abab6769c7617364aff561bd6291e6cc_31bf3856ad364e35_6.1.7601.21953_none_2dd053e5984ad72b.manifest
File versionNot applicable
File size729
Date (UTC)29-Mar-2012
Time (UTC)23:23
PlatformNot applicable
File nameAmd64_d99da1f3fac7655be92ec2edacbc2f4a_31bf3856ad364e35_6.1.7600.21177_none_be913d4bfe31ed14.manifest
File versionNot applicable
File size731
Date (UTC)29-Mar-2012
Time (UTC)23:23
PlatformNot applicable
File nameAmd64_microsoft-windows-t..ager-snapin-nonmsil_31bf3856ad364e35_6.1.7600.21177_none_e86348a4d5716ea7.manifest
File versionNot applicable
File size10,903
Date (UTC)29-Mar-2012
Time (UTC)06:13
PlatformNot applicable
File nameAmd64_microsoft-windows-t..ager-snapin-nonmsil_31bf3856ad364e35_6.1.7601.21953_none_ea5b6e1ed28b073a.manifest
File versionNot applicable
File size10,903
Date (UTC)29-Mar-2012
Time (UTC)20:04
PlatformNot applicable
Additional files for all supported IA-64-based versions of Windows Server 2008 R2
Collapse this tableExpand this table
File nameIa64_9fa8083dc2a326a82aac3d95e3d0c2cd_31bf3856ad364e35_6.1.7601.21953_none_cbe11571c90b9aaf.manifest
File versionNot applicable
File size1,100
Date (UTC)29-Mar-2012
Time (UTC)23:23
PlatformNot applicable
File nameIa64_c1395b13e8cf325a89354cf3bbc72fec_31bf3856ad364e35_6.1.7600.21177_none_fc8c43d768ec418a.manifest
File versionNot applicable
File size1,100
Date (UTC)29-Mar-2012
Time (UTC)23:23
PlatformNot applicable
File nameIa64_microsoft-windows-t..ager-snapin-nonmsil_31bf3856ad364e35_6.1.7600.21177_none_8c4651171d12066d.manifest
File versionNot applicable
File size10,900
Date (UTC)29-Mar-2012
Time (UTC)05:59
PlatformNot applicable
File nameIa64_microsoft-windows-t..ager-snapin-nonmsil_31bf3856ad364e35_6.1.7601.21953_none_8e3e76911a2b9f00.manifest
File versionNot applicable
File size10,900
Date (UTC)29-Mar-2012
Time (UTC)06:26
PlatformNot applicable

APPLIES TO
  • Windows Server 2008 R2 Enterprise
  • Windows Server 2008 R2 Datacenter
  • Windows Server 2008 R2 for Itanium-Based Systems
  • Windows Server 2008 R2 Service Pack 1
  • Windows Server 2008 R2 Standard
  • Windows Web Server 2008 R2
  • Windows 7 Enterprise
  • Windows 7 Home Basic
  • Windows 7 Home Premium
  • Windows 7 Professional
  • Windows 7 Starter
  • Windows 7 Ultimate
Keywords: 
kbexpertiseadvanced kbsurveynew kbfix kbautohotfix kbhotfixserver kbqfe KB2685909
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