Users in cloud (Office 365) unable to book conference rooms on Exchange 2003 on-premise


Office 365 Exchange Online users cannot book conference rooms that resides in Exchange Server 2003 server on-premise in Hybrid deployment.



The issue occurs because Auto Accept Agent is not installed.



To work around the issue, move the resource mailbox to Exchange Server 2010 mailbox server.


Note: The Auto Accept Agent is configured by default in Exchange Server 2010.


More Information

Understanding Auto Accept Agent


Exchange 2003 Auto Accept Agent vs. direct booking



Applies To

Office 365 Exchange Online


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