Retirement of “When Sending a Message” Group Policy in Classic Outlook for Windows [MC1164375]

Retirement of “When Sending a Message” Group Policy in Classic Outlook for Windows [MC1164375]

Message ID: MC1164375 [Introduction] We’re retiring the When Sending a Message Group Policy in Classic Outlook for Windows to improve administrative flexibility and respond to customer feedback. This legacy policy grouped several mail-sending behaviors under one setting. Moving forward, these…
Outlook for Android will require Android 10.0 or higher starting January 2026 [MC1163756]

Outlook for Android will require Android 10.0 or higher starting January 2026 [MC1163756]

Message ID: MC1163756 [Introduction] To maintain app performance, security, and compatibility across devices, Outlook for Android will no longer support Android 9.x or earlier versions starting January 2026. This change aligns with Microsoft’s regular operating system (OS) support evaluations and…
Outlook on the web activity-based timeout is retiring [MC1163753]

Outlook on the web activity-based timeout is retiring [MC1163753]

Message ID: MC1163753 Outlook on the web activity-based timeout is retiring To simplify session timeout management and improve consistency across Microsoft 365 apps, we’re retiring the activity-based authentication timeout (ABT) setting for Outlook on the web. Admins should transition to…
(Updated) Retirement of the SharePoint SendEmail API [MC921752]

(Updated) Retirement of the SharePoint SendEmail API [MC921752]

Message ID: MC921752 (Updated) Updated October 1, 2025: As previously announced in the October 31st, 2024, post, we will be retiring the Utility.SendEmail API on October 31st, 2025. As a reminder, you are able to identify usage of the API via…