A memory leak occurs when you use Windows Event Log API (Wevtapi.dll) to receive WHEA events in real time on a Windows Vista Service Pack 1-based or Windows Server 2008-based computer

This article has been archived. It is offered "as is" and will no longer be updated.
Symptoms
A memory leak occurs when you use Windows Event Log API (Wevtapi.dll) to receive Windows Hardware Error Architecture (WHEA) events in real time on a computer that runs Windows Vista Service Pack 1 or Windows Server 2008. Eventually, this memory leak may cause performance problems.
Resolution

Hotfix information

Important Windows Vista and Windows Server 2008 hotfixes are included in the same packages. However, only one of these products may be listed on the “Hotfix Request” page. To request the hotfix package that applies to both Windows Vista and Windows Server 2008, just select the product that is listed on the page.

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: 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 on a Windows Vista-based computer, you must have Windows Vista Service Pack 1 installed on the computer. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
935791 How to obtain the latest Windows Vista service pack
No prerequisites are required for Windows Server 2008-based computers.

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other hotfixes.

File information

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.

Windows Vista and Windows Server 2008 file information notes

  • 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.
    VersionProductMilestoneService branch
    6.0.6000.16xxxWindows VistaRTMGDR
    6.0.6000.20xxxWindows VistaRTMLDR
    6.0.6001.18xxxWindows Vista SP1 and Windows Server 2008 SP1SP1GDR
    6.0.6001.22xxxWindows Vista SP1 and Windows Server 2008 SP1SP1LDR
  • Service Pack 1 is integrated into Windows Server 2008.
  • The MANIFEST files (.manifest) and MUM files (.mum) installed for each environment are listed separately. 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 (attributes not listed) are signed with a Microsoft digital signature.
For all supported 32-bit versions of Windows Server 2008 and of Windows Vista
File nameFile versionFile sizeDateTimePlatform
Wevtapi.dll6.0.6001.22303250,36806-Nov-200812:59x86
For all supported 64-bit versions of Windows Server 2008 and of Windows Vista
File nameFile versionFile sizeDateTimePlatform
Wevtapi.dll6.0.6001.22303393,21606-Nov-200814:17x64
Wevtapi.dll6.0.6001.22303250,36806-Nov-200812:59x86
For all supported Itanium-based versions of Windows Server 2008
File nameFile versionFile sizeDateTimePlatform
Wevtapi.dll6.0.6001.22303801,79206-Nov-200814:07IA-64
Wevtapi.dll6.0.6001.22303250,36806-Nov-200812:59x86
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 use Windows Event Log API to receive events in real time, visit the following Microsoft Developer Network Web site: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 for Windows Server 2008 and Windows Vista

Additional files for all supported 32-bit versions of Windows Server 2008 and of Windows Vista

File namePackage_1_for_kb955515~31bf3856ad364e35~x86~~6.0.1.0.mum
File versionNot Applicable
File size1,780
Date (UTC)06-Nov-2008
Time (UTC)21:30
PlatformNot Applicable
File namePackage_2_for_kb955515~31bf3856ad364e35~x86~~6.0.1.0.mum
File versionNot Applicable
File size1,947
Date (UTC)06-Nov-2008
Time (UTC)21:30
PlatformNot Applicable
File namePackage_3_for_kb955515~31bf3856ad364e35~x86~~6.0.1.0.mum
File versionNot Applicable
File size1,785
Date (UTC)06-Nov-2008
Time (UTC)21:30
PlatformNot Applicable
File namePackage_4_for_kb955515~31bf3856ad364e35~x86~~6.0.1.0.mum
File versionNot Applicable
File size1,785
Date (UTC)06-Nov-2008
Time (UTC)21:30
PlatformNot Applicable
File namePackage_for_kb955515_client_1~31bf3856ad364e35~x86~~6.0.1.0.mum
File versionNot Applicable
File size1,367
Date (UTC)06-Nov-2008
Time (UTC)21:30
PlatformNot Applicable
File namePackage_for_kb955515_client~31bf3856ad364e35~x86~~6.0.1.0.mum
File versionNot Applicable
File size1,431
Date (UTC)06-Nov-2008
Time (UTC)21:30
PlatformNot Applicable
File namePackage_for_kb955515_sc_0~31bf3856ad364e35~x86~~6.0.1.0.mum
File versionNot Applicable
File size1,421
Date (UTC)06-Nov-2008
Time (UTC)21:30
PlatformNot Applicable
File namePackage_for_kb955515_sc~31bf3856ad364e35~x86~~6.0.1.0.mum
File versionNot Applicable
File size1,423
Date (UTC)06-Nov-2008
Time (UTC)21:30
PlatformNot Applicable
File namePackage_for_kb955515_server_0~31bf3856ad364e35~x86~~6.0.1.0.mum
File versionNot Applicable
File size1,425
Date (UTC)06-Nov-2008
Time (UTC)21:30
PlatformNot Applicable
File namePackage_for_kb955515_server~31bf3856ad364e35~x86~~6.0.1.0.mum
File versionNot Applicable
File size1,431
Date (UTC)06-Nov-2008
Time (UTC)21:30
PlatformNot Applicable
File namePackage_for_kb955515_winpesrv_0~31bf3856ad364e35~x86~~6.0.1.0.mum
File versionNot Applicable
File size1,422
Date (UTC)06-Nov-2008
Time (UTC)21:30
PlatformNot Applicable
File namePackage_for_kb955515_winpesrv~31bf3856ad364e35~x86~~6.0.1.0.mum
File versionNot Applicable
File size1,429
Date (UTC)06-Nov-2008
Time (UTC)21:30
PlatformNot Applicable
File nameX86_3b6730a170cc67e58dc56dbdd1c99831_31bf3856ad364e35_6.0.6001.22303_none_6630208771bb3fa9.manifest
File versionNot Applicable
File size700
Date (UTC)06-Nov-2008
Time (UTC)21:30
PlatformNot Applicable
File nameX86_microsoft-windows-eventlog-api_31bf3856ad364e35_6.0.6001.22303_none_acbda3917e651884.manifest
File versionNot Applicable
File size5,053
Date (UTC)06-Nov-2008
Time (UTC)13:28
PlatformNot Applicable

Additional files for all supported 64-bit versions of Windows Server 2008 and of Windows Vista

File nameAmd64_22bfe32527c70d2106a7d33028beeddd_31bf3856ad364e35_6.0.6001.22303_none_ccf602060d162c13.manifest
File versionNot Applicable
File size704
Date (UTC)06-Nov-2008
Time (UTC)21:30
PlatformNot Applicable
File nameAmd64_d926bde3e5453b53bbfa8af53a6dd57f_31bf3856ad364e35_6.0.6001.22303_none_0f79abebb31f4502.manifest
File versionNot Applicable
File size1,048
Date (UTC)06-Nov-2008
Time (UTC)21:30
PlatformNot Applicable
File nameAmd64_microsoft-windows-eventlog-api_31bf3856ad364e35_6.0.6001.22303_none_08dc3f1536c289ba.manifest
File versionNot Applicable
File size5,069
Date (UTC)06-Nov-2008
Time (UTC)16:27
PlatformNot Applicable
File namePackage_1_for_kb955515~31bf3856ad364e35~amd64~~6.0.1.0.mum
File versionNot Applicable
File size1,790
Date (UTC)06-Nov-2008
Time (UTC)21:30
PlatformNot Applicable
File namePackage_2_for_kb955515~31bf3856ad364e35~amd64~~6.0.1.0.mum
File versionNot Applicable
File size2,177
Date (UTC)06-Nov-2008
Time (UTC)21:30
PlatformNot Applicable
File namePackage_3_for_kb955515~31bf3856ad364e35~amd64~~6.0.1.0.mum
File versionNot Applicable
File size2,013
Date (UTC)06-Nov-2008
Time (UTC)21:30
PlatformNot Applicable
File namePackage_4_for_kb955515~31bf3856ad364e35~amd64~~6.0.1.0.mum
File versionNot Applicable
File size2,013
Date (UTC)06-Nov-2008
Time (UTC)21:30
PlatformNot Applicable
File namePackage_for_kb955515_client_1~31bf3856ad364e35~amd64~~6.0.1.0.mum
File versionNot Applicable
File size1,375
Date (UTC)06-Nov-2008
Time (UTC)21:30
PlatformNot Applicable
File namePackage_for_kb955515_client~31bf3856ad364e35~amd64~~6.0.1.0.mum
File versionNot Applicable
File size1,439
Date (UTC)06-Nov-2008
Time (UTC)21:30
PlatformNot Applicable
File namePackage_for_kb955515_sc_0~31bf3856ad364e35~amd64~~6.0.1.0.mum
File versionNot Applicable
File size1,429
Date (UTC)06-Nov-2008
Time (UTC)21:30
PlatformNot Applicable
File namePackage_for_kb955515_sc~31bf3856ad364e35~amd64~~6.0.1.0.mum
File versionNot Applicable
File size1,431
Date (UTC)06-Nov-2008
Time (UTC)21:30
PlatformNot Applicable
File namePackage_for_kb955515_server_0~31bf3856ad364e35~amd64~~6.0.1.0.mum
File versionNot Applicable
File size1,433
Date (UTC)06-Nov-2008
Time (UTC)21:30
PlatformNot Applicable
File namePackage_for_kb955515_server~31bf3856ad364e35~amd64~~6.0.1.0.mum
File versionNot Applicable
File size1,439
Date (UTC)06-Nov-2008
Time (UTC)21:30
PlatformNot Applicable
File namePackage_for_kb955515_winpesrv_0~31bf3856ad364e35~amd64~~6.0.1.0.mum
File versionNot Applicable
File size1,430
Date (UTC)06-Nov-2008
Time (UTC)21:30
PlatformNot Applicable
File namePackage_for_kb955515_winpesrv~31bf3856ad364e35~amd64~~6.0.1.0.mum
File versionNot Applicable
File size1,437
Date (UTC)06-Nov-2008
Time (UTC)21:30
PlatformNot Applicable
File nameX86_microsoft-windows-eventlog-api_31bf3856ad364e35_6.0.6001.22303_none_acbda3917e651884.manifest
File versionNot Applicable
File size5,053
Date (UTC)06-Nov-2008
Time (UTC)13:28
PlatformNot Applicable

Additional files for all supported Itanium-based versions of Windows Server 2008

File nameIa64_970a46ecd04c696ddde8849cfa727cc3_31bf3856ad364e35_6.0.6001.22303_none_7f860dab602a88ac.manifest
File versionNot Applicable
File size1,046
Date (UTC)06-Nov-2008
Time (UTC)21:30
PlatformNot Applicable
File nameIa64_d3a9556f6d7ea2ed4d506de312099c42_31bf3856ad364e35_6.0.6001.22303_none_916537eca27ef748.manifest
File versionNot Applicable
File size702
Date (UTC)06-Nov-2008
Time (UTC)21:30
PlatformNot Applicable
File nameIa64_microsoft-windows-eventlog-api_31bf3856ad364e35_6.0.6001.22303_none_acbf47877e632180.manifest
File versionNot Applicable
File size5,061
Date (UTC)06-Nov-2008
Time (UTC)16:10
PlatformNot Applicable
File namePackage_1_for_kb955515~31bf3856ad364e35~ia64~~6.0.1.0.mum
File versionNot Applicable
File size1,785
Date (UTC)06-Nov-2008
Time (UTC)21:30
PlatformNot Applicable
File namePackage_2_for_kb955515~31bf3856ad364e35~ia64~~6.0.1.0.mum
File versionNot Applicable
File size2,008
Date (UTC)06-Nov-2008
Time (UTC)21:30
PlatformNot Applicable
File namePackage_3_for_kb955515~31bf3856ad364e35~ia64~~6.0.1.0.mum
File versionNot Applicable
File size2,008
Date (UTC)06-Nov-2008
Time (UTC)21:30
PlatformNot Applicable
File namePackage_for_kb955515_sc_0~31bf3856ad364e35~ia64~~6.0.1.0.mum
File versionNot Applicable
File size1,425
Date (UTC)06-Nov-2008
Time (UTC)21:30
PlatformNot Applicable
File namePackage_for_kb955515_sc~31bf3856ad364e35~ia64~~6.0.1.0.mum
File versionNot Applicable
File size1,426
Date (UTC)06-Nov-2008
Time (UTC)21:30
PlatformNot Applicable
File namePackage_for_kb955515_server_0~31bf3856ad364e35~ia64~~6.0.1.0.mum
File versionNot Applicable
File size1,429
Date (UTC)06-Nov-2008
Time (UTC)21:30
PlatformNot Applicable
File namePackage_for_kb955515_server~31bf3856ad364e35~ia64~~6.0.1.0.mum
File versionNot Applicable
File size1,434
Date (UTC)06-Nov-2008
Time (UTC)21:30
PlatformNot Applicable
File namePackage_for_kb955515_winpesrv_0~31bf3856ad364e35~ia64~~6.0.1.0.mum
File versionNot Applicable
File size1,426
Date (UTC)06-Nov-2008
Time (UTC)21:30
PlatformNot Applicable
File namePackage_for_kb955515_winpesrv~31bf3856ad364e35~ia64~~6.0.1.0.mum
File versionNot Applicable
File size1,433
Date (UTC)06-Nov-2008
Time (UTC)21:30
PlatformNot Applicable
File nameX86_microsoft-windows-eventlog-api_31bf3856ad364e35_6.0.6001.22303_none_acbda3917e651884.manifest
File versionNot Applicable
File size5,053
Date (UTC)06-Nov-2008
Time (UTC)13:28
PlatformNot Applicable
wevtapi memory leak private bytes hang casual ordering
Properties

Article ID: 955515 - Last Review: 01/16/2015 10:27:55 - Revision: 3.0

  • Windows Vista Service Pack 1
  • Windows Server 2008 Standard
  • Windows Server 2008 Enterprise
  • Windows Server 2008 Datacenter
  • 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 Web Server 2008
  • kbnosurvey kbarchive kbautohotfix kbexpertiseinter kbbug kbfix kbqfe KB955515
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