(Updated) Microsoft Teams introduces efficiency mode to improve app responsiveness [MC1287373]

(Updated) Microsoft Teams introduces efficiency mode to improve app responsiveness [MC1287373]

Message ID: MC1287373 (Updated) Updated June 3, 2026: We have updated the timeline. Thank you for your patience. [Introduction] Microsoft Teams is introducing Efficiency Mode, a performance-optimized experience designed for hardware-constrained devices. This change improves app responsiveness and meeting quality by…
New Outlook for Windows becomes available for GCC High and DoD [MC1338816]

New Outlook for Windows becomes available for GCC High and DoD [MC1338816]

Message ID: MC1338816 [What and Why:]New Outlook for Windows will be available for U.S. Government clouds (GCC High and DoD sovereign environments). This milestone helps organizations move forward with adoption planning while maintaining administrative control.[Rollout Schedule:] Public Preview (GCC High…
Microsoft Teams PowerShell: Web Account Manager (WAM) becomes the default authentication broker [MC1338817]

Microsoft Teams PowerShell: Web Account Manager (WAM) becomes the default authentication broker [MC1338817]

Message ID: MC1338817 [What and Why]We are updating the Microsoft Teams PowerShell module to use Web Account Manager (WAM) as the default authentication broker for sign-in. This change improves security and provides a more consistent authentication experience on Windows.A new…
Microsoft Teams: Town hall chat messages now support up to 500 characters [MC1338829]

Microsoft Teams: Town hall chat messages now support up to 500 characters [MC1338829]

Message ID: MC1338829 [Introduction] We are increasing the maximum message length in town hall chat to improve participant engagement and communication clarity. With this change, attendees can contribute more meaningful messages without needing to split them across multiple posts. [When…
Microsoft Teams: Voicemail transcription service migration and new languages [MC1338827]

Microsoft Teams: Voicemail transcription service migration and new languages [MC1338827]

Message ID: MC1338827 [What and Why]Starting in June 2026, Microsoft Teams voicemail transcription will transition to Azure LLM Speech using the Fast Transcription API. This update improves transcription accuracy, processing speed, and reliability, while introducing automatic language detection and support…