Microsoft KB Archive/297146

= FIX: Event System Stops Responding When COM+ LCE Transient Subscriber Is Disconnected =

Article ID: 297146

Article Last Modified on 2/19/2007

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APPLIES TO


 * Microsoft Windows 2000 Service Pack 1
 * Microsoft Windows 2000 Service Pack 2
 * Microsoft Windows 2000 Advanced Server
 * Microsoft Windows 2000 Advanced Server
 * Microsoft Windows 2000 Service Pack 1
 * Microsoft Windows 2000 Service Pack 2
 * Microsoft COM+ 1.0

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This article was previously published under Q297146



SYMPTOMS
When there are two transient subscribers subscribed to the same COM+ event class, where one subscriber is on the same computer as the event class and the other subscriber is on a remote computer, if the remote subscriber is disconnected (for example, unplugged or lost power), the publisher for the event class stops responding.



CAUSE
The COM+ Loosely Coupled Events (LCE) must ping each subscriber for event notification. If any of the subscribers cannot be contacted, LCE will experience a Distributed Component Object Model (DCOM) or remote procedure call (RPC) timeout for each unresponsive subscriber, which causes the event class to stop responding.



RESOLUTION
For an event class that has parallel firing enabled, LCE introduces parallel firing timeouts to address this issue.

For an event class with serial firing, the behavior is by design.

To resolve this problem, obtain Microsoft COM+ Rollup Hotfix 14. For additional information, please see the following article in the Microsoft Knowledge Base:

302845 INFO: Availability of Windows 2000 Post-Service Pack 2 COM+ Hotfix Rollup Package 14

To resolve this problem, obtain the latest service pack for Windows 2000. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

260910 How to Obtain the Latest Windows 2000 Service Pack



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. This problem was first corrected in Windows 2000 Service Pack 3.



MORE INFORMATION
For additional information, click the article number below to view the article in the Microsoft Knowledge Base:

304217 INFO: New COM+ Feature: Parallel Firing Time-out Value for Event System

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

265173 The Datacenter Program and Windows 2000 Datacenter Server Product

For additional information about how to install multiple hotfixes with only one reboot, click the article number below to view the article in the Microsoft Knowledge Base:

296861 Use QChain.exe to Install Multiple Hotfixes with One Reboot

For additional information about how to install Windows 2000 and Windows 2000 hotfixes at the same time, click the article number below to view the article in the Microsoft Knowledge Base:

249149 Installing Microsoft Windows 2000 and Windows 2000 Hotfixes

Additional query words: kbIISCom kbWin2000preSP3COMRollup14Fix

Keywords: kbbug kbfix kbwin2000presp3fix kbwin2000sp3fix KB297146

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