Microsoft 365 Alert – Service Degradation – Microsoft 365 Copilot Chat – Users aren’t shown the “Edit in Outlook” button after prompting Copilot Chat to draft an email message – RESOLVED

16/01/2026 08:50:00 AM

NHSmail Reference: INC46725551

Microsoft Reference: CW1218323

Issue Status: RESOLVED

Issue Description: Users aren’t shown the “Edit in Outlook” button after prompting Copilot Chat to draft an email message

More info: As an optional work around, affected users can use the Copy button to transfer a generated draft from Copilot Chat to Outlook, and continue their work. If your organization has enabled Copilot access within Outlook, the user can continue using Copilot to draft an email once they’ve moved to Outlook.

Final Update: 15/04/2026 09:02:00 AM: After the deployment of our fix, our internal service telemetry has verified that the “Edit in Outlook” button is now appearing as expected after prompting Copilot Chat to draft a message, and that the impact has been remediated.

Scope of impact: Any user prompting Copilot Chat to draft an email message may be impacted.

Root cause: As part of our ongoing efforts to strengthen the Copilot platform, the “Edit in Outlook” feature is temporarily disabled while we address an upstream code issue affecting that feature. Affected users are encouraged to review the workaround information in the more info above while we continue to prepare a comprehensive solution.

Next steps: Microsoft are further analyzing the isolated upstream code issue to help us prevent similar problems in the future.