Microsoft is updating its Purview Endpoint DLP to allow policy application specifically to macOS devices or groups, with rollout starting in late December 2025, requiring version 101.25072 or higher.
Your environment might be affected as
Microsoft Entra is introducing cross-tenant security group synchronization, allowing centralized management of security groups across different tenants, with public preview in January 2026 and general availability in April 2026, requiring admins to update attribute mappings
The site attestation policy for SharePoint is a feature that allows administrators to ensure site owners regularly verify site details, such as ownership and access, to maintain security and organization, with options to limit access
Starting December 16th, 2025, Microsoft 365 Apps will receive a performance and security update for users on the Current Channel, with automatic updates for those with auto-update settings and manual deployment required for others.
Your
A new feature in the Power Platform admin center within Microsoft 365 allows administrators to view detailed information about security roles in Microsoft Dataverse, including descriptions, relevant applications, and core permissions.
Your environment might be
In the Microsoft 365 Copilot app, starting from late January 2026, users blocked by admin policy will see the Chat option but will be redirected to the Search page upon attempting access, while ineligible users
Express voice enrollment in Microsoft Teams automatically creates a voice profile during meetings to enhance transcript accuracy and meeting insights, with administrators able to manage this feature using PowerShell commands.
Your environment might be affected
Microsoft Teams is enhancing Private Channels by allowing the addition of apps like bots, tabs, and message extensions, but administrators and developers must ensure these apps are approved and updated, with the rollout of this
Microsoft 365 Copilot’s Calendar Search allows users to quickly locate and review meeting details using natural language queries, while adhering to organizational security and compliance settings.
Your environment might be affected as follows:
User
Microsoft Purview’s Endpoint Data Loss Prevention (DLP) feature will allow administrators to customize toast notifications with specific instructions or links when sensitive data policies are triggered, starting from late December 2025 to early January 2026,
