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Remove an organization relationship in Exchange Online

An organization relationship lets users in your Microsoft 365 or Office 365 organization share calendar free/busy information with other Microsoft 365, Office 365, or on-premises Exchange organizations. You can remove an organization relationship to disable calendar sharing with the other organization.

To learn more about organization relationships, see Organization relationships in Exchange Online.

What do you need to know before you begin?

  • Estimated time to complete: 5 minutes.

  • You need to be assigned permissions before you can perform this procedure or procedures. To see what permissions you need, see the Permissions in Exchange Online topic.

Use the Exchange admin center to remove an organization relationship

  1. From the Microsoft 365 admin center click Exchange.

  2. Click Organization > Sharing > Organization sharing tab. Or, use Organization sharing.

  3. In the Organization Sharing, select an organization relationship, and then click Delete Delete icon..

  4. In the warning that appears, click Confirm.

Use Exchange Online PowerShell to remove an organization relationship

This example removes the organization relationship Contoso.

Remove-OrganizationRelationship -Identity "Contoso"

For detailed syntax and parameter information, see Remove-OrganizationRelationship.

How do you know this worked?

To verify that you have successfully removed the organization relationship, do one of the following:

  • In the Exchange admin center, go to Organization > Sharing and verify that the organization relationship isn't displayed in the list view under Organization sharing.

  • Run the following command to verify the organization relationship information is removed.

    Get-OrganizationRelationship | Format-List