Published Jun 6, 2025
Effective July 1, 2025, external users will lose access to content shared via SharePoint One Time Passcode (OTP) before enabling Microsoft SharePoint and OneDrive integration with Microsoft Entra B2B. Resharing is required to restore access. Notify users and update internal documentation accordingly.
Updated June 26, 2025: We have updated the content. Thank you for your patience.
As part of our ongoing efforts to enhance security, we are making a critical change to how Microsoft SharePoint and Microsoft OneDrive integrate with Microsoft Entra B2B. This change affects how external users access previously shared content.
When this will happen:
Effective July 1, 2025, external users will no longer be able to access files, folders, or sites using links that were shared via SharePoint One Time Passcode (OTP) before your organization enabled Microsoft SharePoint and OneDrive integration with Microsoft Entra B2B.
How this will affect your organization:
All users in every tenant that has already enabled or in future, will enable SharePoint integration with Entra B2B are impacted. Your external users will lose access to all the files, folders and sites shared via SharePoint One Time Passcode (OTP) before enabling this integration. To give access again, resharing is required. After the integration is enabled, external sharing will use Microsoft Entra B2B Invitation Manager. Learn more: B2B Invitation Redemption - Microsoft Entra External ID | Microsoft Learn
External users attempting to use older links will encounter an error message "Sorry, something went wrong. This organization has updated its guest access settings. To access this item, please contact the person who shared it with you and ask them to reshare it with you.
Impact to end users:
What you need to do to prepare:
Learn more: Microsoft Entra B2B integration for SharePoint & OneDrive - SharePoint in Microsoft 365 | Microsoft Learn