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MC1089315 Plan for changeMajor changeUpdated messageFeature updateUser impactAdmin impact

Resharing to external users required after enabling Microsoft SharePoint integration with Microsoft Entra B2B

Microsoft 365 Message Center Archive by Merill Fernando · Microsoft may not have sent this notice to your tenant.
SharePoint OnlineMicrosoft OneDrive
Microsoft 365 admin center

Action date

30 Jun 2025 483d ago Act by , as Microsoft's metadata states

What the notice says

Microsoft’s text, with source markup removed
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:  External users will lose access to content shared before your tenant enabled SharePoint integration with Entra B2B. To restore access, users must reshare the file, folder, or site with the intended external collaborators.  If the original sender is unavailable or lacks permission, another authorized user must reshare the content.  No changes are required to the sharing process—users can continue to share content as they always have. What you need to do to prepare:  Notify your users: Inform your users who collaborate externally that previously shared links will no longer work. Update internal documentation: Adjust training materials and helpdesk scripts to reflect this change. Learn more: Microsoft Entra B2B integration for SharePoint & OneDrive - SharePoint in Microsoft 365 | Microsoft Learn

What changed

Between archive captures, newest first

  1. Updated June 13,26, 2025: We have updated the timeline below. content. Thank you for your patience. As part of our ongoing efforts to … users will no longer be able to access files, folders, or sites viausing links that were shared via SharePoint One Time Passcode (OTP) before your organization enabled Microsoft SharePoint and OneDrive integration with Microsoft Entra … 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 ManagerManager. Learn more: B2B Invitation Redemption - Microsoft Entra External ID | Microsoft Learn External users attempting to use older links will encounter an error message …

    • Tags Feature update, User impact, Admin impact → Updated message, Feature update, User impact, Admin impact

    Updated June 13, 2025: We have updated the timeline below. Thank you for your patience. As part of our ongoing efforts to enhance security, we are making … Entra B2B. This change affects how external users access previously shared content.   When this will happen: Effective July 1, 2025, external users will no … folders, or sites via links that were shared before your organization enabled Microsoft SharePoint and OneDrive integration with Microsoft Entra B2B.   How this will affect your organization: This change only impacts organizationsAll users in every tenant that havehas already enabled or plan toin future, will enable SharePoint and OneDrive integration with Microsoft Entra B2B. After integration, all new B2B are impacted. Your external sharingusers will use Microsoft Entra B2B Invitation Manager. Previouslylose access to all the files, folders and sites shared links that usedbefore enabling this integration. To give access again, resharing is required. After the SharePoint One-Time Passcode (OTP)integration is enabled, external sharing will no longer work.use Microsoft Entra B2B Invitation Manager External users attempting to use these older links will encounter thean error message "Sorry, something went wrong. This organization has updated its guest … who shared it with you and ask them to reshare it with you."you. Impact to end users:  External users will lose access to content shared via SPO OTP links created beforebefore your tenant enabled SharePoint integration with Entra B2B integration. B2B. To restore access, users must reshare the file, folder, or site with the intended external collaborators.  If the original sender is unavailable or lacks permission, another authorized user must reshare the content.  No changes are required to the sharing process—users can continue to share content as they always have. What you need to do to prepare:  Notify your users: Inform your users who collaborate externally that previously shared links will no longer work after Entra B2B integration. work. Update internal documentation: Adjust training materials and helpdesk scripts to reflect this change. Plan for MFA: External users will be required to complete multi-factor authentication (MFA) registration as part of the Entra B2B onboarding process. Learn more: Microsoft Entra B2B integration for SharePoint & OneDrive - SharePoint …

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