A session pool leak occurs when a desktop sharing application runs on a Windows Vista-based or Windows Server 2008-based computer

Article translations Article translations
Article ID: 2523126 - View products that this article applies to.
Expand all | Collapse all

On This Page

SYMPTOMS

Assume that you run a desktop sharing application on a computer that is running Windows Vista or Windows Server 2008. For example, you run Windows Remote Assistance. In this scenario, a session pool (HT40 tag) leak may occur. Additionally, after you log off the computer, the session pool is freed.

CAUSE

This issue occurs when application uses the mirror driver. This driver hooks the picture of the desktop. Session pool is allocated and the address of the session pool (HT40 tag) set to the internal structure when an internal object is created. The internal structure is overwritten to NULL in a destruction process of the object even if the session pool (HT40 tag) is not freed. When the internal object is created the next time, the session pool (HT40 tag) is allocated again because the internal structure is overwritten to NULL.

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
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:
  • Windows Vista Service Pack 1 (SP1)
  • Windows Vista Service Pack 2 (SP2)
  • Windows Server 2008
  • Windows Server 2008 Service Pack 2 (SP2)
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

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 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.
    Collapse this tableExpand this table
    VersionProductSR_LevelService branch
    6.0.600 1 . 22xxxWindows Vista and Windows Server 2008SP1LDR
    6.0.600 2 . 22xxxWindows Vista and Windows Server 2008SP2LDR
  • Service Pack 1 is integrated into the release version of Windows Server 2008. Therefore, RTM milestone files apply only to Windows Vista. RTM milestone files have a 6.0.0000.xxxxx version number.
  • 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 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 Server 2008 and of Windows Vista
Collapse this tableExpand this table
File nameFile versionFile sizeDateTime
Win32k.sys6.0.6001.228822,041,34418-Mar-201113:40
Win32k.sys6.0.6002.226162,050,56018-Mar-201113:55
For all supported x64-based versions of Windows Server 2008 and of Windows Vista
Collapse this tableExpand this table
File nameFile versionFile sizeDateTime
Win32k.sys6.0.6001.228822,761,72818-Mar-201114:04
Win32k.sys6.0.6002.226162,765,31218-Mar-201114:17
For all supported IA-64-based versions of Windows Server 2008
Collapse this tableExpand this table
File nameFile versionFile sizeDateTime
Win32k.sys6.0.6001.228826,633,98418-Mar-201113:45
Win32k.sys6.0.6002.226166,647,80818-Mar-201114:44

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 Description of the standard terminology that is used to describe Microsoft software updates

Additional file information

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
Collapse this tableExpand this table
File nameX86_b785ce336c6e8f3a0e099e79233f8edb_31bf3856ad364e35_6.0.6002.22616_none_eab2afeb277ae613.manifest
File versionNot applicable
File size694
Date (UTC)18-Mar-2011
Time (UTC)19:30
File nameX86_ed4868e99382f6e95061a3dd9ecf07dc_31bf3856ad364e35_6.0.6001.22882_none_2b7c20d0afafcd42.manifest
File versionNot applicable
File size694
Date (UTC)18-Mar-2011
Time (UTC)19:30
File nameX86_microsoft-windows-win32k_31bf3856ad364e35_6.0.6001.22882_none_b928a503b3e367d1.manifest
File versionNot applicable
File size6,543
Date (UTC)18-Mar-2011
Time (UTC)15:33
File nameX86_microsoft-windows-win32k_31bf3856ad364e35_6.0.6002.22616_none_bb5ec96db0cd5be1.manifest
File versionNot applicable
File size6,543
Date (UTC)18-Mar-2011
Time (UTC)16:15
Additional files for all supported x64-based versions of Windows Vista and of Windows Server 2008
Collapse this tableExpand this table
File nameAmd64_87cde1772c91ba3105f0b1dd6f4ec121_31bf3856ad364e35_6.0.6001.22882_none_87da5b36abbd6f0e.manifest
File versionNot applicable
File size698
Date (UTC)18-Mar-2011
Time (UTC)19:31
File nameAmd64_ab7e26323d8c3ad52d8f7a598d8a57f1_31bf3856ad364e35_6.0.6001.22882_none_b3aae38dcca9cb0f.manifest
File versionNot applicable
File size1,038
Date (UTC)18-Mar-2011
Time (UTC)19:31
File nameAmd64_c99241a5366acacd58e458f6a6e1d2a2_31bf3856ad364e35_6.0.6002.22616_none_339d9f7fa1a847e4.manifest
File versionNot applicable
File size1,038
Date (UTC)18-Mar-2011
Time (UTC)19:31
File nameAmd64_microsoft-windows-win32k_31bf3856ad364e35_6.0.6001.22882_none_154740876c40d907.manifest
File versionNot applicable
File size6,559
Date (UTC)18-Mar-2011
Time (UTC)16:00
File nameAmd64_microsoft-windows-win32k_31bf3856ad364e35_6.0.6002.22616_none_177d64f1692acd17.manifest
File versionNot applicable
File size6,559
Date (UTC)18-Mar-2011
Time (UTC)16:31
File nameWow64_microsoft-windows-win32k_31bf3856ad364e35_6.0.6001.22882_none_1f9bead9a0a19b02.manifest
File versionNot applicable
File size5,013
Date (UTC)18-Mar-2011
Time (UTC)15:26
File nameWow64_microsoft-windows-win32k_31bf3856ad364e35_6.0.6002.22616_none_21d20f439d8b8f12.manifest
File versionNot applicable
File size5,013
Date (UTC)18-Mar-2011
Time (UTC)16:05
Additional files for all supported IA-64-based versions of Windows Server 2008
Collapse this tableExpand this table
File nameIa64_00466cb69649ec007a3a7da7b57a7f90_31bf3856ad364e35_6.0.6002.22616_none_4ac466e37279184f.manifest
File versionNot applicable
File size1,036
Date (UTC)18-Mar-2011
Time (UTC)19:30
File nameIa64_739a58759e283bd157008a4ae265f8e1_31bf3856ad364e35_6.0.6001.22882_none_ac60abd05d41729d.manifest
File versionNot applicable
File size1,036
Date (UTC)18-Mar-2011
Time (UTC)19:30
File nameIa64_99e6ba69641b14ab047257c39101240e_31bf3856ad364e35_6.0.6001.22882_none_24286d58d2007007.manifest
File versionNot applicable
File size696
Date (UTC)18-Mar-2011
Time (UTC)19:30
File nameIa64_microsoft-windows-win32k_31bf3856ad364e35_6.0.6001.22882_none_b92a48f9b3e170cd.manifest
File versionNot applicable
File size6,551
Date (UTC)18-Mar-2011
Time (UTC)15:31
File nameIa64_microsoft-windows-win32k_31bf3856ad364e35_6.0.6002.22616_none_bb606d63b0cb64dd.manifest
File versionNot applicable
File size6,551
Date (UTC)18-Mar-2011
Time (UTC)16:42
File nameWow64_microsoft-windows-win32k_31bf3856ad364e35_6.0.6001.22882_none_1f9bead9a0a19b02.manifest
File versionNot applicable
File size5,013
Date (UTC)18-Mar-2011
Time (UTC)15:26
File nameWow64_microsoft-windows-win32k_31bf3856ad364e35_6.0.6002.22616_none_21d20f439d8b8f12.manifest
File versionNot applicable
File size5,013
Date (UTC)18-Mar-2011
Time (UTC)16:05

Properties

Article ID: 2523126 - Last Review: April 13, 2011 - Revision: 1.0
APPLIES TO
  • Windows Vista Business
  • Windows Vista Enterprise
  • Windows Vista Home Basic
  • Windows Vista Home Premium
  • Windows Vista Starter
  • Windows Vista Ultimate
  • Windows Server 2008 Datacenter
  • Windows Server 2008 Standard
  • Windows Server 2008 Enterprise
  • Windows Server 2008 for Itanium-Based Systems
  • Windows Server 2008 Foundation
Keywords: 
kbautohotfix kbqfe kbhotfixserver kbfix kbsurveynew kbexpertiseinter KB2523126

Give Feedback

 

Contact us for more help

Contact us for more help
Connect with Answer Desk for expert help.
Get more support from smallbusiness.support.microsoft.com