MC1134084: Microsoft Copilot Studio - Inactive agent sessions will now end after 15 minutes of inactivity
Beginning August 4, 2025, agent sessions that have been inactive for 15
Microsoft 365 Message Center
An archive of Message Center updates - curated and preserved for when Microsoft changes things faster than you can say "rolling out." Find the latest and past Message Center posts right here. Updated daily at 1am (UK time).
MC1134166: Updates available for Microsoft 365 Apps for all channels
We've released updates to the following update channels for Microsoft
MC1134168: Plan for Change: Windows quality updates during the out-of-box experience
Starting September 2025, Windows 11 (22H2+) devices will install quality updates by default during out-of-box experience (OOBE). Intune's August release adds an "Install Windows updates" setting in Enrollment Status Page (ESP) to control this. Update rings policies can manage update timing during...
MC1134169: Teams app versions 1.12 and earlier will no longer appear in Microsoft 365 admin center
Teams apps version 1.12 and earlier will be removed from the Microsoft 365 admin center's Integrated apps view starting late August 2025 but remain fully manageable in the Teams admin center. No action is required, and user experience remains unchanged.
MC1134170: [Copilot Extensibility] Admins can manage ownerless Copilot agents with new lifecycle controls
Admins will gain lifecycle controls to identify, review, delete, or block ownerless Copilot agents created by departed users, improving security and governance. The feature rolls out globally from late August to mid-September 2025, with owner assignment for agents coming in October. No prior conf...
MC1133875: Dynamics 365 Project Operations - Edit per diem transaction date, exchange rate in expense management
We are announcing the ability to edit transaction dates and exchange rates
MC1133897: The August 2025 Windows security update is now available
🚨Major Update: This post contains a significant change that may impact your
MC1133898: PowerShell 2.0 removal in Windows
Windows PowerShell 2.0 is removed from Windows 11, version 24H2 starting
MC1133900: Dynamics 365 Project Operations - Post expenses on the expense report posting date
We are announcing the ability to post expenses on the expense report
MC1133831: Power Pages - Power Pages version 9.7.7.x Pre-Production Release
Maintenance window start: August 13, 2025, at 6:00 PM UTC
Maintenance
MC1133868: Dynamics 365 Project Operations - Enable number sequences in expense management
We are announcing the ability to enable number sequences in expense management
MC1133508: Microsoft Teams Integration with Microsoft Defender for Office Tenant Allow/Block List for blocking domains
Microsoft Teams now integrates with Microsoft Defender for Office 365 Tenant Allow/Block List, enabling security admins to centrally manage blocked external domains in Teams. This blocks communications from those domains, supports audit logging, and requires Teams admins to enable security team a...