Microsoft Teams will introduce two new chat sections—Muted chats (enabled by default) and Meeting chats (disabled by default)—to organize conversations. Rollout begins January 2027. Users can enable/disable and reorder these sections; no admin action is needed. Muted chats move automatically to their section unless favorited.
Day in brief
Teams will organize muted and meeting chats into dedicated sections in January
Microsoft Teams will introduce a January 2027 chat reorganization: the Muted chats section will be enabled by default, while Meeting chats will be disabled by default, with users able to toggle and reorder both. Two worldwide changes are also planned for December 2026: a Workflows template that links team tags to channel membership and mobile call declines with chat messages. Documentation updates add certified-device entries and SlimCore troubleshooting detail.
Teams will add Muted chats and Meeting chats sections. Muted chats will be enabled by default, while Meeting chats will be disabled by default. Users can enable or disable and reorder the sections, and muted chats move automatically unless they are favorited. Rollout begins in January 2027, with no admin action required.
- Workflows will connect team tags to channel membership
Teams · GeneralAn optional Workflows app template will automatically add users to channels when they are added to a team tag. The feature rolls out worldwide in mid-December 2026 and does not change defaults.
Users will be able to decline incoming Teams mobile calls with a predefined or custom message sent through Teams chat. Worldwide rollout is scheduled for December 2026; the feature applies only to Teams-to-Teams calls with available chat and requires no admin action.
- Certified Hardware Android adds Meeting Owl and Cisco entries
Devices · GeneralThe table now includes Meeting Owl 5 Pro, Owl Tablet, and multiple Cisco devices, along with their associated software versions and certification dates. Administrators can use these details when validating inventories and planning deployments.
- SlimCore troubleshooting adds Windows error 6/51 guidance
Clients · TroubleshootingVdi 2 Troubleshooting now documents Windows error 6/51, ERROR_INVALID_HANDLE, during SlimCore download, deployment, or startup, and points administrators to BITS Client and AppXDeployment-Server logs.
This period briefing was generated by AI from the tracked Microsoft Learn and Message Center changes.
6 updates
Microsoft Teams
3 updatesMicrosoft Teams will introduce a Workflows app template to automatically add users to channels when they are added to a team tag. This optional feature, rolling out worldwide in mid-December 2026, helps streamline access for location- or project-based groups without default changes.
Microsoft Teams mobile users will soon be able to decline incoming calls with a predefined or custom message sent via Teams chat. This feature, rolling out worldwide in December 2026, enhances communication without answering calls. It applies only to Teams-to-Teams calls with available chat and requires no admin action.
Microsoft Teams Rooms
1 updateShared Spaces Insights
Doc updateThe article now explains how to select a chart bar to view individual rooms, people counts, occupancy details, and comparisons with configured capacity.
Teams devices and phones
1 updateCertified Hardware Android
Doc updateThe table now includes Meeting Owl 5 Pro, Owl Tablet, and multiple Cisco devices with associated software versions and certification dates.
Teams clients and VDI
1 updateVdi 2 Troubleshooting
Doc updateThe troubleshooting page now documents Windows error 6/51 (ERROR_INVALID_HANDLE) during SlimCore download, deployment, or startup, with guidance to review BITS Client and AppXDeployment-Server logs.