To enhance security, the `Get-FederationInformation` cmdlet in Exchange Online will now only return domain information explicitly passed as a parameter. This update, affecting scripts and tools, will roll out from late June 2025 to late August 2025. Review and update any automation accordingly. More details are available in the official blog post.
Applies to: Exchange Online
Source: mc.merill.net — data via Merill Fernando's open archive (MIT).