MC1194558: No New Cloud Implementation Projects in Dynamics Lifecycle Services
Starting February 16, 2026, new Finance and operations apps customers trying to
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).
MC1194479: Windows Office Hours: December 18, 2025
If you are an IT admin with questions about managing and updating
MC1194430: Microsoft Dataverse – Service Update 9.2.25122.00000 for GBR
We have a minor service update planned for your Microsoft Dataverse environment
MC1194083: Microsoft Planner: New service plan to support task-based chat
Microsoft Planner will introduce a new service plan enabling task-based chat for better collaboration, rolling out worldwide in early January 2026. It will be included in specific Planner, Project, and Dynamics 365 licenses and enabled by default. No immediate admin action is needed.
MC1194079: Microsoft Teams: Restart Event feature for Town Hall with unrecoverable failures
Microsoft Teams will introduce a Restart Event feature for live events with unrecoverable failures, rolling out worldwide from January to February 2026. Organizers can restart events to minimize disruption, with no admin setup needed. Attendees may face brief interruptions but can rejoin seamlessly.
MC1194071: Coming soon: IT admins will be able to customize recording and transcription notifications in Teams
Starting January 2026, IT admins can customize Teams recording and transcription notification messages and privacy links per meeting policy, aligning consent language with organizational needs. Custom messages have a 200-character limit, support explicit and implicit consent, and apply only when ...
MC1194070: Microsoft 365 Copilot: Declarative agents model upgrade to GPT-5.1
Microsoft 365 Copilot declarative agents will upgrade to the GPT-5.1 model with an auto architecture by mid-January 2026. The upgrade enables advanced reasoning for complex queries, requires no admin changes, is enabled by default, and affects all tenants using these agents. No action or complian...
MC1194069: Microsoft Teams: Enhancing update efficiency through peer-to-peer (P2P) download
Microsoft Teams will use peer-to-peer update distribution via Delivery Optimization starting December 2025, enabling devices on the same network to share update files. This reduces CDN bandwidth use, speeds updates, and saves up to 30% bandwidth. No admin action is needed, but network policies sh...
MC1194065: Latest on Windows quality updates out of the box – now disabled by default
Starting with the January 2026 security update, the AllowOOBEUpdates CSP policy will
MC1194061: IP address changes in Defender for Identity v2.x sensor communication
Microsoft Defender for Identity v2.x sensors will start using new IP addresses from the AzureAdvancedThreatProtection service tag range beginning mid-December 2025. Organizations restricting outbound IPs must update firewall rules to allow this range to avoid connectivity loss; no action is neede...
MC1193695: Microsoft 365 Copilot: Email triage with pin, flag, archive, and mark read
Microsoft 365 Copilot will enable natural language commands for email triage—pinning, flagging, archiving, marking read/unread, and completing tasks—in Outlook. Available mid-December 2025 for licensed users, this feature requires no admin changes and aims to simplify inbox management.
MC1193694: Viva Glint: Add a partner to Viva Glint
Microsoft will enable admins to onboard external partners to Viva Glint via a simplified process starting December 2025. Partners can be added as Support Users through Entra ID guest accounts to manage employee engagement surveys. Admin action is required to enable partner access, with guidance p...