Event ID - 1023

Event Id1023
SourceMSExchangeAdmin
DescriptionUnable to set a property on the message store on server name. Result: error message
Event InformationAccording to Microsoft:
Cause:

This event usually occurs when two administrators attempt to move the same mailbox at the same time. If this event occurs for a different reason, the reason will be indicated by the event message.
User Action :
Wait for the second administrator to finish moving the mailbox before you attempt to retry this operation.
Reference LinksError code 0x80040301 appears when you try to move a mailbox in Exchange Server 2003

Unable to set a property on the message store on server name. Result: error message

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