Microsoft KB Archive/892256

= FIX: A memory leak occurs in the EventSystem service when you use COM+ LCE =

Article ID: 892256

Article Last Modified on 10/7/2005

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APPLIES TO


 * Microsoft Windows 2000 Server
 * Microsoft Windows 2000 Professional Edition
 * Microsoft Windows 2000 Advanced Server
 * Microsoft COM+ 2.0 Standard Edition

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SYMPTOMS
A memory leak occurs in the Microsoft COM+ EventSystem service when you use COM+ Loosely Coupled Events (LCE) on a computer that is running Microsoft Windows 2000.



CAUSE
This issue occurs because of an 8-byte memory leak in a caching mechanism that the EventSystem service uses.



RESOLUTION
This issue is fixed in Windows 2000 Post-Service Pack 4 COM+ 1.0 Hotfix Rollup Package 32. For more information, click the following article number to view the article in the Microsoft Knowledge Base:

895177 Availability of Windows 2000 Post-Service Pack 4 COM+ 1.0 Hotfix Rollup Package 32

Hotfix information
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Windows 2000 hotfix rollup package that contains this hotfix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

Prerequisites
You must have Microsoft Windows 2000 Service Pack 4 (SP4) installed to apply this hotfix

Restart information
You must restart the computer after you apply this hotfix.

Hotfix replacement information
This hotfix is not replaced by any later hotfix.

Hotfix 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 tool in Control Panel.   Date         Time   Version          Size       File name 16-Mar-2005 06:46  2000.2.3519.0      169,232  Catsrv.dll 16-Mar-2005 06:46  2000.2.3519.0      595,728  Catsrvut.dll 16-Mar-2005 06:46  2000.2.3519.0       97,040  Clbcatex.dll 16-Mar-2005 05:46  2000.2.3519.0      553,744  Clbcatq.dll 16-Mar-2005 06:46  2000.2.3519.0       41,744  Colbact.dll 16-Mar-2005 06:46  2000.2.3519.0      198,416  Comadmin.dll 16-Mar-2005 06:46  2000.2.3519.0       97,552  Comrepl.dll 16-Mar-2005 06:46  2000.2.3421.351    342,288  Comsetup.dll 16-Mar-2005 06:46  2000.2.3519.0    1,471,248  Comsvcs.dll 16-Mar-2005 06:46  2000.2.3519.0      625,936  Comuid.dll 16-Mar-2005 06:46  2000.2.3519.0      240,400  Es.dll 16-Mar-2005 06:46  2000.2.3519.0       96,016  Msdtclog.dll 16-Mar-2005 06:46  2000.2.3519.0      725,776  Msdtcprx.dll 16-Mar-2005 06:46  2000.2.3519.0    1,197,840  Msdtctm.dll 16-Mar-2005 06:46  2000.2.3519.0      153,872  Msdtcui.dll 16-Mar-2005 06:46  2000.2.3519.0       52,496  Mtxclu.dll 16-Mar-2005 06:46  2000.2.3519.0       26,896  Mtxdm.dll 16-Mar-2005 06:46  2000.2.3519.0       35,600  Mtxlegih.dll 16-Mar-2005 06:46  2000.2.3519.0      122,640  Mtxoci.dll 16-Mar-2005 06:46  5.0.2195.7036      957,712  Ole32.dll 16-Mar-2005 06:46  5.0.2195.7020      437,008  Rpcrt4.dll 16-Mar-2005 06:46  5.0.2195.7035      212,240  Rpcss.dll 07-Feb-2005 05:35  5.0.2195.7026    6,301,696  Sp3res.dll 25-Feb-2005 17:43  6.1.22.4            13,536  Spmsg.dll 25-Feb-2005 17:43  6.1.22.4           209,632  Spuninst.exe 16-Mar-2005 06:46  2000.2.3519.0       71,440  Stclient.dll 16-Mar-2005 06:46  2000.2.3519.0      398,608  Txfaux.dll 16-Mar-2005 06:46  2000.2.3519.0       19,216  Xolehlp.dll 25-Feb-2005 17:43  6.1.22.4            22,240  Spcustom.dll 25-Feb-2005 17:43  6.1.22.4           371,936  Updspapi.dll



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.



MORE INFORMATION
You may experience this issue when you use LCE publishers and subscribers or COM+ system events. The EventSystem service in Svchost.exe tracks LCE publications and subscriptions on the computer. When an LCE publisher starts, it registers an ICollectionNotify interface with the EventSystem service. When a new subscriber for that publisher registers with the EventSystem service, the service calls the ICollectionNotify interface to inform the publisher. The EventSystem service stores the ICollectionNotify interface in a map. This issue is caused by a memory leak in a map list element.

For more information about how to obtain a hotfix for Windows 2000 Datacenter Server, click the following article number to view the article in the Microsoft Knowledge Base:

265173 The Datacenter Program and Windows 2000 Datacenter Server product

For more information, 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

Keywords: kbbug kbfix kbqfe kbhotfixrollup KB892256

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