Microsoft 365 (Outlook for Mac) - Unable to open/subscribe to a calendar due to a permission error

When you attempt to open/subscribe to a another calendar via Outlook for Mac, you receive the error below:

cannot open folder error

The reason for this error is:

  • You have not been granted the necessary permissions - at a minimum, you need "full details" permissions to open a calendar. Any permission below this level will cause this error and the calendar will not be opened. Ask the owner of the calendar to confirm/verify the permissions you have been granted.

Microsoft reference.

Keywords:microsoft office365 o365 m365 microsoft 365 subcalendar sub-calendar folder permissions share open 2016 2019 proplus secondary primary error you do not have permission to open this folder outlook cannot open the folder   Doc ID:58927
Owner:O365 S.Group:Microsoft 365
Created:2015-12-15 12:54 CDTUpdated:2023-02-02 09:22 CDT
Sites:DoIT Help Desk, DoIT Tech Store, Microsoft 365
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