OneDrive mobile apps will stop supporting sign-ins with SharePoint Server on-premises accounts starting June 2026 to enhance security and align with modern identity standards. Users must switch to Microsoft 365 or Microsoft Entra ID accounts. This change supports the end of SharePoint Server 2016/2019 support in July 2026.
Applies to: Microsoft OneDrive
Source: mc.merill.net — data via Merill Fernando's open archive (MIT).