Article ID: 2557304 - View products that this article applies to.
When a user opens a calendar item by using Outlook Web Access (OWA) in a Microsoft Exchange Server 2007 Service Pack 3 (SP3) environment, the Store.exe process may consume excessive CPU resources on the Exchange server intermittently. Additionally, the memory used by the Store.exe process increases significantly. Additionally, the following event is logged in Application log:
Note When this issue occurs, the Exchange server may stop responding to all client requests.
Event Type: Error
Event Source: MSExchangeIS
Event Category: Performance
Event ID: 9582
The virtual memory necessary to run your Exchange server is fragmented in such a way that normal operation may begin to fail. It is highly recommended that you restart all Exchange services to correct this issue.
This issue occurs because the calendar item has exceptions and each exception has attachments that are also iCalendar (iCal) messages. This causes the Store.exe process to fall into an infinite loop.
To resolve this issue, install the following update rollup:
2602324Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/2602324/ )Description of Update Rollup 5 for Exchange Server 2007 Service Pack 3
322756After you install the hotfix package, follow these steps to restrict the number of the attachments:
(http://support.microsoft.com/kb/322756/ )How to back up and restore the registry in Windows
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Article ID: 2557304 - Last Review: September 22, 2011 - Revision: 1.0