Resource Mailbox’s Calendar Shows The Organizer’s Name Instead Of The Subject

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:

You just have to close and reopen your Outlook.

It also works on Exchange Server 2016.


Thanks for reading! You can follow me on Twitter @PrigentNico

About Nicolas 270 Articles
I work as an IT Production Manager, based in Paris (France) with a primary focus on Microsoft technologies. I have 10 years experience in administering Windows Servers. . I am a Microsoft MVP for Cloud & Datacenter Management. I also received the PowerShell Hero 2016 award by PowerShell.0rg. And finally, I am "MCSE: Cloud Platform and Infrastructure", "MCSA: Windows Servers", "Administering & Deploying SCCM", and CheckPoint CCSA certified.