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Configuring an Office 365 Service User with access to all Room Resource Mailboxes (PowerShell)

In a scenario where you are managing a large number of resource mailboxes, you may not want to assign delegation privileges on a mailbox by mailbox basis.

For Office 365 and Exchange environments, you can easily create a service user who has access to all Room Resource mailboxes on your tenant in just 2 lines of PowerShell.


Connect-ExchangeOnline -ShowBanner:$false -Device  

New-ManagementScope -Name "RoomMailboxes" -RecipientRestrictionFilter {RecipientTypeDetails -eq "RoomMailbox"}

The first line connects to Exchange Online as your service user.

The second line creates a named Management scope for your service user to manage Room mailboxes. Note: Equipment mailboxes and workspace mailboxes will not be managed by this rule.

You can read more here:

Updated on: 27/02/2023

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