Starting April 6, 2026, Microsoft will retire the Semi-Annual Enterprise Channel installation option for unmanaged devices in the Microsoft 365 admin center. Existing devices remain unaffected, but new selections cannot use this channel. Managed devices via Intune or Configuration Manager are not impacted. No immediate action required.
Applies to: Microsoft 365 suite
Source: mc.merill.net — data via Merill Fernando's open archive (MIT).