Need to Find the owner of a Calendar that is being Shared in the Organization

Copper Contributor

Good morning,


I work for a MSP and we just acquired a new Accounting company. They have few calendars being shared with some of the users and now the owner is asking to give access to these calendars to few more people. However, they do not know who shared the calendars and therefore who is the owner of them.


There is no Shared Mailbox or O365 groups linked to the calendars we need to work on.


How can I find out which account those calendars are linked to?



2 Replies

@spectreker Hi,


I think someone has created and shared a calendar from his own mailbox. can that be?


If so, you can query this via Powershell

1. connect to the Exchange Online

2. do the following, replace the CalendarName with the name of the calendar or with a part of the name of the calendar: Get-Mailbox -ResultSize unlimited | Get-MailboxFolderStatistics -FolderScope Calendar | select Name, FolderPath, Identity | Where-Object {$_.Name -like '*CalenderName*'}


then you can find out which mailbox the calendar is in. i recommend migrating the calendar to an O365 group.




Try this out:


Get-MailboxFolderPermission -Identity email address removed for privacy reasons:\Calendar