In an Exchange environment, when you send a meeting request to a Resource mailbox, the meeting request is accepted automatically as expected but the meeting subject is replaced with the organizer’s name.
This is default behavior of a resource mailbox. It occurs because AddOrganizerToSubject and DeleteSubject parameters are set to « True ».
Let’s take a look at these settings with the Get-CalendarProcessing cmdlet:
To resolve this issue:
- Open the Exchange Management Shell.
- And run the following cmdlet:
PowerShell1PS > Set-CalendarProcessing -Identity <RESOURCEMAILBOXNAME> -DeleteSubject $False -AddOrganizerToSubject $False
You just have to close and reopen your Outlook.
It also works on Exchange Server 2016.
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