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: 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…
(Updated) Microsoft Teams: Private channels increased limits and transition to group compliance [MC1134737]

(Updated) Microsoft Teams: Private channels increased limits and transition to group compliance [MC1134737]

Message ID: MC1134737 (Updated) Update as of June 2, 2026 – We have updated the timeline. Thank you for your patience. Migration of channels is complete with a few pending channels for which we have shared more information here for admin…
OneDrive mobile apps will no longer support SharePoint Server on‑premises sign-ins [MC1332814]

OneDrive mobile apps will no longer support SharePoint Server on‑premises sign-ins [MC1332814]

Message ID: MC1332814 [What and Why:] To strengthen security and align with modern identity standards, OneDrive for iOS and Android will no longer support sign-ins using SharePoint Server on‑premises accounts. This change reflects Microsoft’s continued investment in enterprise-ready security, ensuring…