MC270671 – Updated August 31, 2021: Microsoft has updated the content below to provided additional clarity. Thank you for your patience.
Microsoft has making some changes to the Hybrid federated search, also called inbound hybrid search, where user searches from the SharePoint in Microsoft 365 Search Center display hybrid results.
As part of search modernization in Microsoft 365 Microsoft is updating the infrastructure used by SharePoint Server’s Hybrid federated search. As part of the process, customers who are using the Hybrid federated search with hybrid SharePoint deployments will need to update their configuration to continue using hybrid search with SharePoint Server and SharePoint Online.
If you are not actively using or have implemented the Hybrid federated search with on-premises SharePoint, you can safely ignore this communication.
Key points
How this will affect your organization:
The necessary configuration is provided as a Windows PowerShell script that is used to adjust an existing SharePoint Hybrid configuration to successfully work and authenticate using the new Microsoft 365 search engine.
There are three main procedures executed as part of the script:
Note: In the event you have not updated your servers by October 1, 2021 as outlined, users will no longer receive on-premises SharePoint results in SharePoint Online. Applying the configuration change will not affect the user experience.
What you need to do to prepare:
To apply the configuration change:
Please click Additional Information to learn more.
Review: Plan hybrid federated search for SharePoint ServerAdditional information