Article ID: 159297 - View products that this article applies to.
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A single thread in the Store.exe process is utilizing 90%-100% of the CPU processor time. This high utilization coincides with the start of Microsoft Exchange Information Store (IS) Maintenance window (as configured by the IS Maintenance Schedule) and does not stop unless the Information Store Service is cycled or the computer itself is cycled.
One of the checks during the IS Maintenance schedule is that of Public Folder expires. During the IS maintenance run, the System (or Site) Folders are also checked. These include the Offline Address Book, the Schedule+ Free Busy folder, and the Organization Forms. In particular, the Schedule+ Free Busy folder has a default 7 day expiry on it so it is checked during the expiry period of IS Maintenance. The function performing the expiry check on the Schedule+ Free/Busy folder encounters a second copy of the folder in the deleted folders table and this causes the function to remain in a tight loop causing the high CPU utilization.
To resolve this issue a rebuild of the Site folders is necessary. To rebuild the Site folders, follow these steps:
The re-creation of the Site folders will delete any existing content. To re-populate the Site folders with data see below:
Repopulating the Site Folders with Data
Offline Address BookTo repopulate the offline address book Site Folder:
Schedule+ Free Busy InformationThe Schedule+ Free Busy Information Site Folder will be repopulated as users log on to Schedule+ and generate changes. During this period some users' Free Busy information will be temporarily unavailable.
Organizational FormsIf there was an Organizational Forms Site Folder, it must be re-created using the Microsoft Exchange Administrator program.
Article ID: 159297 - Last Review: October 4, 2013 - Revision: 3.3