External Sharing in SharePoint and OneDrive is changing: What You Need to Know

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In an ongoing effort to create a more secure environment by default, Microsoft is introducing an important security update that will affect how external users access content shared through SharePoint and OneDrive. Starting July 1, 2025, any links shared with external users before your organization enabled Microsoft Entra B2B integration will no longer work. This change applies to all organizations that have already enabled or will enable SharePoint and OneDrive integration with Microsoft Entra B2B (Most organizations I have looked into so far). External users trying to use old links will see an error message saying the organization has updated its guest access settings. To regain access, the content must be reshared. Highlights of how the change affects organizations who have enabled B2B: All external sharing will require guest registration. External users must be added as guests in your Microsoft Entra directory. Access will be managed through Microsoft Entra B2B Invitation Manager. T...

A better Together Mode with content view is rolling out

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There is a new layout for Together mode and content share rolling out to tenants. With the new layout, Together mode will be displayed under the shared content, allowing users to see both the participants in Together mode and the shared content simultaneously. The new Together mode will support raised hands, reactions, and name labels.

The new layout is available for Mac and desktop users worldwide (standard multi-tenant), GCC, GCC High, and DoD cloud instances. 

This announcement is related to Microsoft 365 Roadmap ID 181615. And according to the message center, it should be rolling out late January and early February.