MC1234561: Microsoft Teams on Windows: Annotate content while sharing a single window

[Introduction]

We’re introducing Annotations on Single Window Sharing for Windows in Microsoft Teams meetings, based on customer feedback requesting more focused and privacy‑preserving collaboration. Presenters can now annotate directly on a shared application window without sharing their entire desktop.

This message is associated with Roadmap ID 555239.

[When this will happen:]

• Targeted Release: Rollout begins early March 2026 and is expected to complete by mid-March 2026.
• General Availability: Rollout begins mid-March 2026 and is expected to complete by late March 2026.

[How this affects your organization:]

Who is affected:

• Users who present content in Microsoft Teams meetings on Windows
• Meeting participants on Windows, macOS, and mobile devices

What will happen:

• Presenters can share asingle application window instead of their full screen.
• Annotations can be started from the presenter toolbar during window sharing.
• Participants can view and contribute to annotations.
• The feature isenabled by default and requires no admin configuration.
• Existing Teams and Microsoft Whiteboard behaviors for annotation storage and access are respected.
• There is no change to background app visibility—notifications and unrelated windows remain private.

[What you can do to prepare:]

• No action is required. The feature will be available automatically as it reaches your tenant.
• Consider notifying helpdesk and end users about the new annotation capability during window sharing.
• Ensure presenters use the Microsoft Teams desktop app on Windows and are on a supported version.
• Review existing internal guidance or training materials related to Teams screen sharing and update as needed.

Additional information:

• Annotations are initiated by the presenter during single window sharing.
• Annotation content follows existing Microsoft Whiteboard storage and retention behavior.
• Presenter support is currently limited to Windows.

[Compliance considerations:]

No compliance considerations identified, review as appropriate for your organization.