Microsoft Teams updated sender email addresses for team and channel membership notifications to improve clarity. Changes include using the team owner’s email for membership additions and no-reply@teams.mail.microsoft for private join requests and shared channel notifications. The rollout completed in November 2025 with no action required.
Microsoft Purview DLP adds inline file upload protection in Edge for Business to prevent data leaks to unmanaged GenAI apps. Admins can enforce policies by file size, type, and sensitivity on Intune-managed Windows devices. Public preview starts mid-November 2025; general availability begins early December 2025.
Microsoft Teams is introducing a simplified external collaboration admin experience with three modes—Open, Controlled, and Custom—available in the Teams admin center. Public preview starts mid-November 2025, with general availability by early February 2026. Existing settings remain unless changed by admins.
Viva Glint’s data retention policy now retains customer data indefinitely while the subscription is active or per tenant-configured policies. This update applies immediately to tenants without existing retention policies. No action is needed if a policy is already set; otherwise, submit a support request to configure it.
Easily customize your prompt output with built-in controls to select your preferred style and choose the format, whether it’s a poster, infographic, or image. With a Microsoft 365 Copilot license, apply your organization brand kit to create on-brand content without manually uploading assets and describing your style.
Microsoft Purview introduces the Classifier Simulation Mode, the first phase of the broader Classifier Health Monitoring Platform.
This capability enables you to test, analyze, and optimize custom classifiers on production data before publishing them, hence offering a reliable means of verifying the effectiveness of classifiers before committing them to live environments.
Custom classifiers are powerful tools but can sometimes include inefficient regex patterns or overly broad logic, leading to Noisy classifier due to high matches, False positives and High scanning latency
Simulation Mode mitigates these risks by allowing you to validate classifier quality and performance before publishing, helping ensure healthy, performant, and more precise classification outcomes.
Easily customize your visual content with built-in controls to select your preferred style, choose your visual format, whether it’s a poster, infographic, or image and with a Microsoft 365 Copilot license, apply your brand kit.
Engage content from private communities and events will be used as grounding source for M365 Copilot. When a user queries in M365 Copilot, they will only be able to see content they are privileged to access.
Microsoft Information Protection (MIP) content sensitivity label support in Planner will enable encryption, restrict unauthorised actions such as copying, printing, or exporting plan contents, and add visual markings like watermarks for clear sensitivity awareness. By enforcing content-level protections, Planner will help organisations prevent data leaks, maintain compliance, and enable secure collaboration without affecting productivity.
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