Summary
- Microsoft is retiring the Copilot Prioritize feature in Outlook and removing the corresponding user experience from all Outlook clients.
- The change affects users who currently have access to Copilot Prioritize, including those using Outlook with Microsoft 365 Copilot.
- After retirement, users will no longer be able to use Copilot Prioritize in Outlook.
- No administrative configuration or opt-in is required for this retirement.
- IT should notify affected users, brief the help desk, and update internal training and documentation.
Primary Service: Outlook
Admin Impact: Low
User Impact: Medium
Release Start: 26 Oct 2026
Release End: 15 Nov 2026
Services: Exchange, M365 Copilot, Outlook
Category: Plan for change
Tags: Retirement
History
10/21/2026 Item Added to Message Center
Microsoft Message
Updated October 22, 2026: We have updated the timeline and content. Thank you for your patience.
We’re retiring the Copilot Prioritize feature in Outlook. Starting October 26, 2026, we’ll begin to roll back the feature and remove the corresponding user experience from all Outlook clients as part of the cleanup effort. This change allows us to simplify the Outlook Copilot experience and focus our ongoing investments.
Rollout Schedule
We will begin this change on October 26, 2026, and expect to complete by end of March 2027.
Impact on Your Organization
Who is affected
Users who currently have access to Copilot Prioritize in Outlook.
Platforms/Services
- All Outlook clients
- Microsoft 365 Copilot
What will happen
- Copilot Prioritize will be retired, with the rollback beginning October 26, 2026, and expected to be completed by end of March 2027.
- The Prioritize user experience will be removed from all Outlook clients as part of the retirement and cleanup effort.
- Users will no longer be able to use the feature after retirement.
- No opt-in is required because this change removes an existing feature.
Action Required/Recommendations
No administrative action is required. We recommend that you:
- Notify affected users of the retirement.
- Prepare your help desk and support teams for the change.
- Remove references to Copilot Prioritize from internal documentation, training, and support materials.
Compliance considerations
No compliance considerations identified. Review as appropriate for your organization.