Calendar Problems

Fix Outlook for Mac Not Allowed to Share a Calendar Error

Aamir Naveed Akram Sep 27, 2026 869 views

Question details

The user receives a permissions error when attempting to grant access to a shared calendar in Outlook for Mac 2021, despite appearing to have owner permissions.

How to Fix 'Not Allowed to Share a Calendar' in Outlook for Mac

Product: Outlook for Mac 2021
Device & OS: macOS
Scenario: Attempting to share an existing calendar or grant calendar access to another user.
Observed behavior: Outlook blocks the action and displays an error message stating the user is not allowed to share the calendar.

Before you start

Verify whether you are the original creator of the calendar or if it was shared with you as a delegate, as this determines your sharing capabilities.

Solution 1Recommended

Request the Original Calendar Owner to Grant Access

Because delegate owners cannot modify sharing permissions in Outlook for Mac, the original calendar creator must add new users.

In Microsoft Exchange and Outlook for Mac, being granted 'Owner' permissions as a delegate does not give you the right to share the calendar with additional users. This is a security measure built into the software.

To resolve this, the original calendar owner must personally grant access to any new users.

Identify the original owner

Check your calendar list in the left navigation pane. Shared calendars usually appear under the 'Shared Calendars' heading, often displaying the original owner's name.

Contact the calendar owner

Reach out to the original creator of the calendar and provide them with the email addresses of the users who need access.

Owner updates permissions

The original owner must open Outlook, right-click the calendar, select 'Sharing Permissions', and add the new users with the appropriate permission levels.

Request the Original Calendar Owner to Grant Access

Delegate Permissions Limit: Even with delegate 'Owner' status, you can only create, read, modify, and delete items. You cannot manage who has access to the calendar.

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Frequently Asked Questions

Why does Outlook for Mac say I have owner permissions if I can't share the calendar?

In Outlook, delegate 'Owner' permissions allow you to manage events fully (create, read, modify, and delete). However, managing the calendar's sharing permissions is strictly reserved for the primary account holder who created the calendar.

Can I share the calendar using Outlook on the Web instead?

No. The restriction applies to the Microsoft Exchange account level. Whether you use Outlook for Mac or Outlook on the Web (OWA), delegates cannot re-share a calendar. Only the original owner can do this.

How do I check my current permission level for a shared calendar?

Right-click the shared calendar in the sidebar and select 'Calendar Properties' or 'Sharing Permissions'. Here, you can view your current permission level, though you will not be able to add new users unless you are the primary owner.

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