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...

Data Lifecycle Management: Separate Copilot retention policies from Teams chats

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In a previous post I mentioned how Microsoft is adding the capability to use Purview Data Loss Prevention on Copilot to block certain information from surfacing for the user.

Now, Microsoft is adding Copilot to it's retention policy controls, and starting mid-February, public preview tenants can start exploringthis new feature.

Admins will be able to create separate retention policies for Microsoft Teams chats and Microsoft 365 Copilot interactions, and allows for a more tailored data management. The feature will of course require that the targeted users have Microsoft 365 Copilot license. 

According to the message center, the public preview will be during February, and we can hope for a general release sometime in March. The feature will be available by default, but policies will have to be set up.