Export Office 365 Mailbox Calendar Permissions using PowerShell

[Kathy_Cooper]

Delegating calendar access is one of the popular Exchange features. As an admin, managing calendar permission is one of the challenging tasks because,

• Microsoft has not provided GUI based report to view calendars sharing settings.

• PowerShell needs multiple cmdlets to retrieve calendar permissions.

So, I have created a PowerShell script that can generate 6 different calendar permission reports based on the requirement.

https://o365reports.com/2021/11/02/get-calendar-permissions-report-for-office365-mailboxes-powershel...

I have listed a few significant use cases of the script below,

• Get calendar permissions for all users

• Get calendars shared with external users

• List all calendars a user has access to

• View all calendars’ sharing permissions (including default and anonymous sharing)

• Export calendar permissions for list of mailboxes – input CSV

• Get default calendar permission

• Schedule calendar permission report