Copilot in Outlook: Meeting Preparation Is About to Get Smarter

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Currently, the “Prepare for meetings with Copilot” feature requires at least three participants. Starting mid-October, this is changing. Copilot will soon support all meetings, including 1:1s. The rollout will begin in mid-October and is expected to complete by November 2025 according to the message center. With this update, you’ll also see new real-time insights in the Outlook meeting event form, summarizing relevant context, tasks, documents, and other resources. Plus, you’ll be able to chat with Copilot to confirm action items or better understand meeting goals. The more context Copilot has, the better it works. Meeting series with related emails, shared documents, Teams chats, and previous Copilot transcriptions deliver the richest experience. If your organization limits Copilot to in-meeting use only and deletes content afterward, you’ll miss out on much of this value. Here is a relevant " how to " guide for users.

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. This provides better tracking, lifecycle management, and control over guest access.
  • Multi-factor authentication (MFA) may be required. If your organization enforces MFA for guests, they will need to complete MFA before accessing shared content.
  • New sharing links will only work for registered guests. Anonymous access will no longer be supported in this model.

This means that external collaboration becomes more secure and auditable, but also requires a bit more setup and communication with your external partners. This change may have an impact on how you govern guest lifecycle management, from invitation to deactivation. Also verify your conditional access requirements for guests.

This update is a smart move by Microsoft to bring more control and visibility to external collaboration. While it may cause some short-term inconvenience, it’s a good opportunity to review and improve your sharing practices.