Event ID - 8003

Event Id8003
SourceMSExchange Availability
DescriptionThe calendar configuration for the mailbox %1 is corrupt and has been reset. Please review the configuration.
Event InformationAccording to Microsoft :
Cause :
This Error event indicates that the Resource Booking Attendant could not parse the calendar information for the resource mailbox specified in the event description. A resource mailbox is a mailbox that represents a type of resource, such as a conference room or video equipment. This event may occur if calendar configuration data that helps obtain availability of the resource is corrupted. The calendar configuration data can be corrupted for one or more of the following reasons:
1.The resource mailbox was moved from one mailbox database to a different mailbox database.
2.There is logical corruption in the mailbox database that has the resource mailbox specified in the event description.
Resolution :
Review related Error and Warning events in the Application log. These related events may help you find the root cause of this error.
Reference LinksEvent ID 8003 from Source MSExchange Availability

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