serv365.ai
15 Sep 2026
This week in Microsoft 365
37 new Message Center changes this week. The ones that matter:
New changes
Microsoft Purview | Data Lifecycle Management - Graph API Support for archive mailboxes
MC1469565 ·
impact 9/10 critical
·
major
· Microsoft Purview
Microsoft Publisher: Reminder that support ends in October 2026
MC1469564 ·
impact 9/10 critical
·
major
· Microsoft 365 apps
[Whiteboard] Standalone app deprecation (Windows, Mobile)
MC1469557 ·
impact 5/10 high
·
major
· Microsoft OneDrive, Microsoft Teams
Retirement of Power BI Q&A
MC1218421 ·
impact 5/10 high
·
major
· Power BI
Microsoft 365 Copilot: Insights Copilot Analytics cowork adoption impact
MC1472032 · Microsoft Viva
Outlook: Change the organizer of meetings
MC1472028 · Exchange Online, Microsoft 365 suite
Microsoft SharePoint: PowerShell support for brand fonts deletion
MC1472025 · SharePoint Online
[Outlook Mobile] Purview Data Loss Prevention support for Calendar Events
MC1472023 · Exchange Online, Microsoft Purview
Act-by dates in the next 30 days
24 Sep
—
(Updated) Microsoft 365 Copilot Chat: Updated commercial Copilot endpoint for Microsoft Edge
24 Sep
—
Microsoft Edge: Retirement of Windows Information Protection (WIP) and Microsoft Defender Application Guard (MDAG)
30 Sep
—
(Updated) Microsoft Exchange Online: Prepare for Exchange Web Services retirement with EWSAllowedAppIDs
30 Sep
—
Microsoft Viva Engage: Microsoft Entra permissions required for community and membership administration
01 Oct
—
Microsoft Purview | Data Lifecycle Management - Graph API Support for archive mailboxes
01 Oct
—
Project Online Essentials reaches End of Life on October 1, 2026: Action required
01 Oct
—
Microsoft Publisher: Reminder that support ends in October 2026
01 Oct
—
(Updated) Microsoft Teams: Update the Teams mobile app to maintain Calendar functionality
Incidents resolved this week
Some users in the United Kingdom may have been unable to access multiple Microsoft 365 services
MO1470143 · Microsoft 365 suite
Some users in the United Kingdom may be unable to sign-in to Microsoft Teams using iOS or macOS
TM1470091 · Microsoft Teams
Users may be unable to see the suggestions pills after receiving a bot response in Microsoft 365 Copilot Chat
CW1469885 · Microsoft 365 Copilot Chat
Some users may be unable to search in Exchange Online
EX1469261 · Exchange Online
Some users may be unable to access https://m365.cloud.microsoft and receive an error
MO1469271 · Microsoft 365 suite
Reaching GA this month
Microsoft 365 app: New Copilot Notebooks design in the Microsoft 365 Copilot App (iOS)
Outlook: New Copilot entry point in Classic Outlook
Microsoft Viva: Discussion Post Previews
Microsoft 365: [Education] Control access to Learning Activities and Teach
Microsoft Copilot (Microsoft 365): Copilot Chat can now better match search results from Scanned PDFs
Access: Cascading combo and list boxes with LinkMasterFields/LinkChildFields
Microsoft Copilot (Microsoft 365): New Rich Answer Cards
Microsoft Excel: Extending support for Insights Services to GCC-H and DoD sovereign clouds
From Microsoft
Microsoft named a Leader in the 2026 Gartner® Magic Quadrant™ for Container Management
— Azure Blog
Protecting organizations from AI-assisted executive impersonation and invoice fraud
— Microsoft Security Blog
The Economics of Agent Optimization: How AI agent governance controls cost and proves ROI
— Azure Blog
The future of infrastructure resiliency starts with modernization
— Azure Blog
ESPC 2026 is coming to Amsterdam: Bringing Microsoft and the community together
— Microsoft 365 Blog
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