Starting September 26, 2025, eDiscovery cmdlets require Exchange Online PowerShell v3.9.0+ with the -EnableSearchOnlySession flag in Connect-IPPSSession. This change affects specific cmdlets but not the Purview portal and remains incompatible with Certificate-Based Authentication. Update scripts accordingly.
Applies to: Microsoft Purview
Source: mc.merill.net — data via Merill Fernando's open archive (MIT).