Teams Rooms on Android will dynamically resize video tiles in Gallery view based on room occupancy, matching the Windows experience. One person results in equal tile size to remote participants; multiple people enlarge the tile. The feature, using AI-based people count, is enabled by default from October 2025, with admin controls to disable it.
Microsoft Teams will block messages containing unsafe, weaponizable file types in chats and channels starting September 2025 (targeted release) and November 2025 (general availability). Admins can enable this protection via Teams Admin Center or PowerShell. Blocked files include executables and other risky formats to reduce malware risks.
Microsoft Teams will introduce malicious URL protection in chats and channels, warning users about phishing links. Rolling out from September to November 2025, the feature requires admin activation during preview and will be on by default at general availability. It scans URLs using Microsoft Defender reputation data.
The new SharePoint Content Management Assessment (CMA) dashboard, launching September–October 2025, helps admins evaluate site health, permissions, and lifecycle readiness. It automates governance tasks, strengthens security, and prepares sites for Copilot. CMA requires a SharePoint Advanced Management or Microsoft 365 Copilot license and is initiated manually by admins.
Microsoft Teams will update the sender email for channel guest invitations from noreply@microsoft.com to no-reply@teams.mail.microsoft between September and October 2025. This automatic change improves email delivery, requires no user action, and may need updates to email filtering or allow lists.
The Outlook Lite app will retire starting October 6, 2025, blocking new installs and requiring users to switch to the Outlook Mobile app, which offers enhanced features, security, and Microsoft 365 integration. No manual data migration is needed, and admins have control via Entra ID.
Microsoft is introducing Microsoft Graph APIs for Standard eDiscovery licenses, enabling automation of case, search, hold, data source, and export management. Public preview starts September 2025; general availability in November 2025. APIs require Purview pay-as-you-go billing, with 50GB free monthly and $10/GB thereafter.
Microsoft 365 Copilot app will introduce a Library feature by late September 2025, consolidating Copilot-generated images and Pages into one section. It replaces the Pages menu, is enabled by default for Copilot chat users, requires no admin action, and has no new compliance concerns.
Outlook for Web will add a “Get diagnostics” option under the Help tab by late October 2025, enabling users to send diagnostic data to Microsoft Support. The feature is enabled by default, manageable by admins via cloud policy, and aims to streamline support and troubleshooting.
Microsoft Purview DLP introduces opt-in User-Based Alert Aggregation, consolidating alerts by user within a set time window to improve security triage. Rolling out from September to November 2025, admins can enable it in the compliance portal to group rule match events per user, enhancing investigation efficiency.
I've been working with Microsoft Technologies over the last ten years, mainly focused on creating collaboration and productivity solutions that drive the adoption of Microsoft Modern Workplace.
Found my content useful?
Buy Me a Beer
HANDS ON SharePoint
HANDS ON Teams
HANDS ON Lists
HANDS ON tek
M365 Admin
