The April 2026 Windows security update is now available


Plan Mode for Copilot in Excel helps users make complex changes with confidence by outlining a clear, step by step approach before anything in the workbook is updated. Users can review how Copilot intends to complete the task, see which data or capabilities may be used, and adjust the plan as needed—ensuring edits are intentional, transparent, and aligned with their goals before they’re applied. This makes it easier to tackle multi step or high impact tasks while staying in control of every change.

Monitor or protect file with unsaved sensitive content from being printed or being moved to USB or network share.

When users have more than one Copilot-enabled account added to new Outlook, the Copilot side pane in Calendar will include an account dropdown that makes it clear which Copilot-enabled account you’re using and lets you switch accounts without relying on Outlook UI’s account context.

With this feature, data officers can now complete their coverage story by now embedding hyperlinks within toast messages for the Edge browser. When this rule is triggered, the end user will see a toast with a customized title and message with a hyperlink. This feature is useful when organizations need to direct users to a specific resource or a repository for more specific instruction (e.g. internal policy SharePoint site).

When a Teams Rooms on Android is invited as a meeting presenter, the front-of-room display defaults to the attendee view. Presenters always have full control from the console, including green room and off-stage management, and can switch the front-of-room display to presenter view without impacting attendees.

Microsoft Purview Endpoint data loss prevention is expanding coverage to Copilot + PCs initially to support Recall snapshots and determining whether policies exist to prevent capture of windows containing restricted sensitivity labels and Sensitive information types (SITs). Purview admins will author Endpoint DLP custom policies to integrate with Windows Copilot + PC Recall setup by Intune admins for Copilot + PC devices exclusively.

Currently admins can set Purview DLP policies to protect sensitive data from being sent to any Generative AI apps, users get blocked from sending their prompts to LLM when this is triggered and stops their workflow. This new add-on to the feature shows a new UI that will give users the option to be redirected to M365 Copilot which will open and navigate to this M365 Copilot tab and allow them to send the same prompt there.

If you’re unable to attend a meeting, you can select Follow as your response to help you stay informed of the meeting events. Following a meeting reminds the organizer to record the meeting and alert you to any follow-up items.

When viewing Engage notifications from the Teams Activity app, users will also see other trending posts in their organization.
