Remove a federation trust
Applies to: Exchange Server 2013
A federation trust establishes a trust relationship between a Microsoft Exchange 2013 organization and the Azure Active Directory authentication system and supports sharing with other federated Exchange organizations. Removing a federation trust from your on-premises Exchange organization will disable federated sharing with other federated Exchange organizations and with Microsoft 365 or Office 365 organizations connected to your organization as part of a hybrid deployment. You should carefully consider the overall impact to your organization before removing a federation trust.
For additional management tasks related to federation trusts, see Federation procedures.
This feature of Exchange Server 2013 isn't fully compatible with Office 365 operated by 21Vianet in China and some feature limitations may apply. For more information, see Learn about Office 365 operated by 21Vianet.
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 "Federation and certificates" permissions entry in the Exchange and Shell infrastructure permissions topic.
After removing the federation trust, you can remove the TXT records from your public DNS server for each federated domain. Review the requirements for removing a TXT record with the organization that hosts your public DNS records.
For information about keyboard shortcuts that may apply to the procedures in this topic, see Keyboard shortcuts in the Exchange admin center.
Use the EAC to remove a federation trust
On an Exchange 2013 server in your on-premises organization, navigate to organization > sharing.
In the Federation Trust section, click Remove.
In the warning, click yes to confirm that you want to remove the federation trust.
After the federation trust is removed, click Close.
Use the Shell to remove a federation trust
This example removes the federation trust.
For detailed syntax and parameter information, see Remove-FederationTrust.
How do you know this worked?
To verify that you have successfully removed the federation trust, do one of the following:
In the EAC, navigate to organization > sharing. If you successfully removed the federation trust, only the Enable button will be available under Federation Trust.
In the Shell, run the following command to verify that federation trust information isn't returned for your Exchange organization.
For detailed syntax and parameter information, see Get-FederationTrust.
Having problems? Ask for help in the Exchange forums. Visit the forums at Exchange Server.