Overview
You may receive the below error message when adding Shared Calendars in Outlook for Mac. This occurs even when the permissions are set in the webmail:
"Outlook cannot open the folder."
You do not have permission to open this folder. Contact '<username@domain.com>' for permission.
This article provides step-by-step instructions on how to enable Shared Calendars in Outlook for Mac.
Prerequisites
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Configure your Exchange Web Services (EWS) account in Outlook for Mac.
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Configure the Calendar sharing feature via webmail.
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Ensure that the necessary Calendar folders are synced.
Process
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Go to Tools > Accounts > Advanced.
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Go to the Server tab > Enable the Sync shared mailbox option.
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Go to the Delegates tab > Open these additional mailboxes and add the desired user using the + sign.
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Restart Mac Outlook.
Confirmation
Shared Calendars are displayed in the Calendar tab.
Related Articles
Enabling Public and Delegated Folders in Outlook for Mac