Microsoft KB Archive/926132

= WMI does not clear event registrations when the corresponding sink becomes invalid in Windows Server 2003 =

Article ID: 926132

Article Last Modified on 10/11/2007

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APPLIES TO

 Microsoft Windows Management Instrumentation 1.5, when used with:  Microsoft Windows Server 2003, Standard Edition (32-bit x86)

 Microsoft Windows Server 2003, Enterprise Edition

 Microsoft Windows Server 2003, Datacenter Edition (32-bit x86)

 Microsoft Windows Server 2003, Web Edition</li></ul>

 Microsoft Windows Server 2003, Standard x64 Edition</li></ul>

 Microsoft Windows Server 2003, Enterprise x64 Edition</li></ul>

 Microsoft Windows Server 2003, Datacenter x64 Edition</li></ul>

 Microsoft Windows Server 2003, Enterprise Edition for Itanium-based Systems</li></ul>

 Microsoft Windows Server 2003, Datacenter Edition for Itanium-Based Systems</li></ul> </li></ul>

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<div class="symptoms_section">

SYMPTOMS
Consider the following scenario:
 * An event consumer uses Windows Management Instrumentation (WMI). WMI provides asynchronous delivery of events.
 * The event consumer registers an IWbemObjectSink interface with WMI. The event consumer does this to receive DCOM callbacks that contain these events.
 * The event consumer uses the same IWbemObjectSink interface for many such event registrations.

In this scenario, the consumer's DCOM connection may be lost because of network issues or because the consumer stops responding (hangs). If the consumer's DCOM connection is lost, each event registration remains active inside WMI. Therefore, WMI consumes resources for each registration that is associated to the IWbemObjectSink interface. WMI consumes these resources until a failed delivery attempt occurs for each registration.

<div class="cause_section">

CAUSE
This problem occurs if an event consumer loses connectivity with WMI. This problem also occurs if a WMI client loses DCOM communication with WMI because of network problems.

<div class="resolution_section">

Service pack information
To resolve this problem, obtain the latest service pack for Windows Server 2003. For more information, click the following article number to view the article in the Microsoft Knowledge Base:

889100 How to obtain the latest service pack for Windows Server 2003

Software update information
This update has been superseded by update 931320. For more information about update 931320, click the following article number to view the article in the Microsoft Knowledge Base:

931320 WMI does not clear event registrations when the corresponding sink becomes invalid in Windows Server 2003

<div class="status_section">

STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section. This problem was first corrected in Windows Server 2003 Service Pack 2.

<div class="moreinformation_section">

MORE INFORMATION
For more information about the standard terminology that is used to describe Microsoft software updates, 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 kbexpertiseadvanced kbhotfixserver kbwinserv2003presp2fix kbwinserv2003sp2fix KB926132

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