How do I set delegation settings for all Microsoft room resources at once?

03-04-2026

When configuring delegation for room resources, you can use the Exchange Admin Center or run PowerShell commands to perform a batch update.

[Through Windows PowerShell]

$delegate = "admin@yourdomain.com"

Get-Mailbox -RecipientTypeDetails RoomMailbox -ResultSize Unlimited | ForEach-Object {

Add-MailboxPermission -Identity $_.PrimarySmtpAddress -User $delegate -AccessRights FullAccess -InheritanceType All -AutoMapping:$false}

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