Microsoft 365 Service Updates for October 6 - 12, 2025

Microsoft 365 Service Updates for the week of October 6 through 12, 2025, detailing numerous forthcoming changes across the suite of products. Many of the updates center on Microsoft Copilot and Viva Analytics, introducing new dashboards for adoption tracking and enhanced AI agent management features across applications like Word, Excel, and Loop. Several security enhancements are also noted, including Microsoft Defender for Cloud Apps expanding threat protection and updates to Exchange ActiveSync Certificate-Based Authentication. Additionally, the announcements cover general feature rollouts for Teams, PowerPoint, and Outlook, alongside reminders about the end of servicing for Windows 11 version 23H2 and the upcoming retirement of legacy Viva Engage networks.