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Article ID: 979231 - Last Review: July 15, 2010 - Revision: 2.0

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SYMPTOMS

Consider the following scenario:
  • You install update 968389 on a computer that is running Windows Vista or Windows Server 2008.
  • You run an application that uses the Schannel functions to handle the user authentication requests.
In this scenario, the memory usage of the application keeps increasing.

Note This issue occurs if the application calls the InitializeSecurityContext function or the AcceptSecurityContext function.

CAUSE

The Schannel.dll module does not free the allocated memory space.

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 (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, your computer 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  (http://support.microsoft.com/kb/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  (http://support.microsoft.com/kb/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 Vista and Windows Server 2008 file information notes
  • 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 0 . 20xxxWindows VistaRTMLDR
    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 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 Vista or of Windows Server 2008

Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Schannel.dll6.0.6001.22613271,87225-Jan-201012:33x86
Schannel.dll6.0.6002.22321271,87225-Jan-201012:38x86
For all supported x64-based versions of Windows Vista or of Windows Server 2008

Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Schannel.dll6.0.6001.22613339,96825-Jan-201013:06x64
Schannel.dll6.0.6002.22321339,96825-Jan-201012:19x64
Schannel.dll6.0.6001.22613271,87225-Jan-201012:33x86
Schannel.dll6.0.6002.22321271,87225-Jan-201012:38x86
For all supported IA-64-based versions of Windows Server 2008

Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Schannel.dll6.0.6001.22613790,52825-Jan-201012:29IA-64
Schannel.dll6.0.6002.22321790,52825-Jan-201012:09IA-64
Schannel.dll6.0.6001.22613271,87225-Jan-201012:33x86
Schannel.dll6.0.6002.22321271,87225-Jan-201012:38x86

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 InitializeSecurityContext (Schannel) function, visit the following Microsoft Web site:
General information about the InitializeSecurityContext (Schannel) function (http://msdn.microsoft.com/en-us/library/aa375924(VS.85).aspx)

For more information about AcceptSecurityContext (Schannel) function, visit the following Microsoft Web site:
General information about the AcceptSecurityContext (Schannel) function (http://msdn.microsoft.com/en-us/library/aa374708(VS.85).aspx)

For more information, click the following article number to view the article in the Microsoft Knowledge Base:
968389  (http://support.microsoft.com/kb/968389/ ) Extended Protection for Authentication
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 Server Vista and for Windows Server 2008

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

Collapse this tableExpand this table
File nameUpdate.mum
File versionNot Applicable
File size3,565
Date (UTC)27-Jan-2010
Time (UTC)06:34
PlatformNot Applicable
File nameX86_078ef2fa81911490d8bba44757cb7a66_31bf3856ad364e35_6.0.6002.22321_none_4494bf337e28bc24.manifest
File versionNot Applicable
File size705
Date (UTC)27-Jan-2010
Time (UTC)06:34
PlatformNot Applicable
File nameX86_27ac1174cbebaeafe999eff034a41ef7_31bf3856ad364e35_6.0.6001.22613_none_38dc825ad438cc91.manifest
File versionNot Applicable
File size705
Date (UTC)27-Jan-2010
Time (UTC)06:34
PlatformNot Applicable
File nameX86_microsoft-windows-security-schannel_31bf3856ad364e35_6.0.6001.22613_none_229822496e65d044.manifest
File versionNot Applicable
File size18,090
Date (UTC)25-Jan-2010
Time (UTC)14:34
PlatformNot Applicable
File nameX86_microsoft-windows-security-schannel_31bf3856ad364e35_6.0.6002.22321_none_2471c3b16b960eab.manifest
File versionNot Applicable
File size18,090
Date (UTC)25-Jan-2010
Time (UTC)14:22
PlatformNot Applicable
Additional files for all supported x64-based versions of Windows Vista or of Windows Server 2008

Collapse this tableExpand this table
File nameAmd64_29e4660b7361ec7627842cb74fa0f28f_31bf3856ad364e35_6.0.6001.22613_none_e846748bb3024e5c.manifest
File versionNot Applicable
File size1,060
Date (UTC)27-Jan-2010
Time (UTC)06:34
PlatformNot Applicable
File nameAmd64_a69adc6bc81da8e3cfe36b2de39c0051_31bf3856ad364e35_6.0.6002.22321_none_66bfd9fca78a191f.manifest
File versionNot Applicable
File size1,060
Date (UTC)27-Jan-2010
Time (UTC)06:34
PlatformNot Applicable
File nameAmd64_dcd5b49499048882eaec1f0633ef4fc8_31bf3856ad364e35_6.0.6001.22613_none_3dfcb418a00cf60e.manifest
File versionNot Applicable
File size709
Date (UTC)27-Jan-2010
Time (UTC)06:34
PlatformNot Applicable
File nameAmd64_microsoft-windows-security-schannel_31bf3856ad364e35_6.0.6001.22613_none_7eb6bdcd26c3417a.manifest
File versionNot Applicable
File size18,120
Date (UTC)25-Jan-2010
Time (UTC)15:18
PlatformNot Applicable
File nameAmd64_microsoft-windows-security-schannel_31bf3856ad364e35_6.0.6002.22321_none_80905f3523f37fe1.manifest
File versionNot Applicable
File size18,120
Date (UTC)25-Jan-2010
Time (UTC)14:15
PlatformNot Applicable
File nameUpdate.mum
File versionNot Applicable
File size3,593
Date (UTC)27-Jan-2010
Time (UTC)06:34
PlatformNot Applicable
File nameWow64_microsoft-windows-security-schannel_31bf3856ad364e35_6.0.6001.22613_none_890b681f5b240375.manifest
File versionNot Applicable
File size17,557
Date (UTC)25-Jan-2010
Time (UTC)14:24
PlatformNot Applicable
File nameWow64_microsoft-windows-security-schannel_31bf3856ad364e35_6.0.6002.22321_none_8ae50987585441dc.manifest
File versionNot Applicable
File size17,557
Date (UTC)25-Jan-2010
Time (UTC)14:15
PlatformNot Applicable
Additional files for all supported IA-64-based versions of Windows Server 2008

Collapse this tableExpand this table
File nameIa64_4c5964d6fdab6edc2f6c8f255de9b417_31bf3856ad364e35_6.0.6001.22613_none_5be735ac42810a63.manifest
File versionNot Applicable
File size1,058
Date (UTC)27-Jan-2010
Time (UTC)06:34
PlatformNot Applicable
File nameIa64_78cb6464cb7d4b822e06a51912fe6182_31bf3856ad364e35_6.0.6001.22613_none_f1f72d2f1e30d3e2.manifest
File versionNot Applicable
File size707
Date (UTC)27-Jan-2010
Time (UTC)06:34
PlatformNot Applicable
File nameIa64_db0ead295183daf9813f07de75fb70c1_31bf3856ad364e35_6.0.6002.22321_none_e176371b1604023a.manifest
File versionNot Applicable
File size1,058
Date (UTC)27-Jan-2010
Time (UTC)06:34
PlatformNot Applicable
File nameIa64_microsoft-windows-security-schannel_31bf3856ad364e35_6.0.6001.22613_none_2299c63f6e63d940.manifest
File versionNot Applicable
File size18,105
Date (UTC)25-Jan-2010
Time (UTC)14:15
PlatformNot Applicable
File nameIa64_microsoft-windows-security-schannel_31bf3856ad364e35_6.0.6002.22321_none_247367a76b9417a7.manifest
File versionNot Applicable
File size18,105
Date (UTC)25-Jan-2010
Time (UTC)13:58
PlatformNot Applicable
File nameUpdate.mum
File versionNot Applicable
File size2,748
Date (UTC)27-Jan-2010
Time (UTC)06:34
PlatformNot Applicable
File nameWow64_microsoft-windows-security-schannel_31bf3856ad364e35_6.0.6001.22613_none_890b681f5b240375.manifest
File versionNot Applicable
File size17,557
Date (UTC)25-Jan-2010
Time (UTC)14:24
PlatformNot Applicable
File nameWow64_microsoft-windows-security-schannel_31bf3856ad364e35_6.0.6002.22321_none_8ae50987585441dc.manifest
File versionNot Applicable
File size17,557
Date (UTC)25-Jan-2010
Time (UTC)14:15
PlatformNot Applicable

APPLIES TO
  • Windows HPC Server 2008
  • Windows Server 2008 Datacenter without Hyper-V
  • Windows Server 2008 Enterprise without Hyper-V
  • Windows Server 2008 for Itanium-Based Systems
  • Windows Server 2008 Standard without Hyper-V
  • Windows Server 2008 Datacenter
  • Windows Server 2008 Enterprise
  • Windows Server 2008 Standard
  • Windows Web Server 2008
Keywords: 
kbqfe kbHotfixServer kbsurveynew kbautohotfix kbexpertiseinter kbexpertiseadvanced kbbug kbfix KB979231
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