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...

Copilot in Outlook: Prioritize my inbox

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Microsoft is releasing a new feature for Copilot in Outlook: "Prioritize my inbox by Copilot". The feature can go through your inbox and analyse the content for you. it will then mark them as high and low priority and help you focus on the tasks that are important to you.

When the feature rolls out, it will be implemented as an opt-in feature for users, and it will be a "limited seating" until there is enough capacity for all within the organization. When available and enabled, there will be ways to tell Copilot what is important to you. You can read more about this on the support pages for the feature.

A couple of notes:

  • It will only prioritize in your main inbox (Not subfolders)
  • It will not work on shared mailboxes or groups
This feature is associated with Microsoft 365 Roadmap ID 411302 and will start rolling out in April 2025