"Sharing invitation couldn’t be sent" error in Outlook Web App when Exchange 2013 user tries to grant Delegate permissions to a security group


An Exchange Server 2013 user tries to grant Delegate permissions through Calendar sharing to a security group by using Outlook Web App. However, the user receives the following error message:
The sharing invitation couldn’t be sent to the following recipients:Groupalias@contoso.com. Please try again later.


The behavior is by design in Exchange 2013.


To work around this issue, use one of the following methods:


Article ID: 3188800 - Last Review: Oct 27, 2016 - Revision: 1

Microsoft Exchange Server 2013 Standard Edition, Microsoft Exchange Server 2013 Enterprise