Microsoft Whiteboard storage is migrating from Azure to OneDrive, enhancing security and compliance. Migration began in February 2024, completed tenant-wide by August 2025, with Azure storage deprecated by February 2026. Users must complete migration by then to retain access; admins can monitor progress via PowerShell.
Applies to: Microsoft 365 apps
Source: mc.merill.net — data via Merill Fernando's open archive (MIT).