Published May 23, 2025
To enhance security, the `Get-FederationInformation` cmdlet in Exchange Online will now only return domain information explicitly passed as a parameter. This update, rolling out from late June to early July 2025, may affect scripts or tools relying on default domain data retrieval. Review and update relevant automation accordingly.
Updated June 26, 2025: We have updated the timeline below. Thank you for your patience.
To enhance security and reduce potential data exposure, we are updating the behavior of the Get-FederationInformation cmdlet in Exchange Online. This change limits the scope of domain data returned by the cmdlet.
When this will happen:
General Availability (Worldwide, GCC, GCC-High, DoD): Rollout will begin in late June 2025 (previously mid-June) and is expected to complete by early July 2025 (previously late June).
How this affects your organization:
Previously, the Get-FederationInformation cmdlet returned all federated domain information in the DomainNames field. After this update, the cmdlet will only return domain information that is explicitly passed as a parameter. This change may impact scripts or tools that rely on retrieving all federated domains by default.
There is no change to the cmdlet’s availability or core functionality—only the scope of data returned is affected.
What you can do to prepare:
Get-FederationInformation cmdlet to ensure they explicitly pass the required domain(s) as parameters.