Published Sep 17, 2025
Message Center
Updated October 24,December 23, 2025: We have updated the content and timeline. Thank you for your patience.
Introduction
Starting in early November,January, the Microsoft 365 Copilot app for Windows will introduce a new Update available button. This button will not block the app UI; users will be able to continue interacting with the app when the button appears. This update encourages users to use the latest version of the app—ensuring access to new features, performance improvements, and security updates—without disrupting their workflow.
When this will happen:
General Availability: Rollout begins in January 2026 (previously early November 2025 (previously early October)2025) and completes by end of January 2026 (previously end of November 2025 (previously end of October)2025).
How this affects your organization:


What you can do to prepare:
Compliance considerations:
No compliance considerations identified, review as appropriate for your organization.
Updated October 24, 2025: We have updated the timeline. Thank you for your patience.
Introduction
Starting in early November, the Microsoft 365 Copilot app for Windows will introduce a new Update available button. This button will not block the app UI; users will be able to continue interacting with the app when the button appears. This update encourages users to use the latest version of the app—ensuring access to new features, performance improvements, and security updates—without disrupting their workflow.
When this will happen:
General Availability: Rollout begins in early November 2025 (previously early October) and completes by end of November 2025 (previously end of October).
How this affects your organization:
What you can do to prepare:
Compliance considerations:
No compliance considerations identified, review as appropriate for your organization.