Article ID: 945602 - View products that this article applies to.
Users who use Microsoft Office Outlook 2003 cannot publish their free/busy data in Exchange Server 2010 or in Exchange Server 2007. Only hash marks appear in the free/busy data for these users. Additionally, the following event is logged in the Application log:
Event ID :
This issue will generally only occur in an environment that is pure Exchange 2010 or Exchange 2007. You can experience this issue if you migrated from a previous version of Exchange or if you installed a new Exchange Server 2010 or Exchange Server 2007 organization.
Unable to clean your freebusy information
This problem occurs because there are no replicas of at least one Free/Busy folder in the Exchange Server 2010 or Exchange Server 2007 organization.
To resolve this problem, follow these steps
The legacyExchangeDN attribute of a mailbox is set when that mailbox is created, and it depends on the Administrative group that the server belonged to at the time of creation. As long as you have Outlook 2003 clients, you must maintain a replica of all Free/Busy public folders that have existed in the organization to make sure that these clients can access Free/Busy information. Outlook 2007 clients use the availability service to get their Free/Busy information and are not subject to this limitation.
For more information about this issue, visit the following Web site:
Article ID: 945602 - Last Review: October 15, 2009 - Revision: 4.1