SharePoint: Entra B2B integration for external sharing in OneDrive & SharePoint
OneDrive and SharePoint will shift from legacy SPO OTP to Entra B2B-based external sharing, automatically creating B2B guest accounts in your directory. This improves guest identity management and aligns external collaboration with Microsoft 365-wide standards, but requires admins to review and adjust external sharing and guest account policies.
Key dates
- — preview (Feature in development; preview availability not yet announced)
Microsoft's description
OneDrive and SharePoint will use Microsoft Entra B2B as the invitation and authentication method for external users, replacing the legacy SharePoint One Time Passcode (SPO OTP) experience. External sharing will automatically create B2B guest accounts in your directory, delivering consistent external collaboration across Microsoft 365, stronger guest identity management, and modern security aligned with Microsoft Entra standards.