Support for Word Mobile, Excel Mobile, and PowerPoint Mobile UWP applications will end on October 14, 2025. Organizations should remove these apps before this date to avoid security risks. Alternatives include Microsoft 365 Copilot mobile app, web versions of Word, Excel, and PowerPoint, or desktop versions in a Microsoft 365 plan.
Microsoft 365 will introduce a new setting, “App usage for custom apps,” in April 2025, allowing enterprise developers to view app analytics in the Developer Portal for Microsoft Teams. By default, this setting will be disabled. Admins need to enable it to provide developers with insights into app performance and user engagement.
The option to open files in classic Microsoft Teams will be retired between April 15, 2025, and April 30, 2025, due to security vulnerabilities. Users should open files in the appropriate desktop or web app instead. This change does not affect the new version of Microsoft Teams.
Businesses using Google Workspace can now enable bi-directional calendar syncing with Microsoft Teams through the Admin app. This feature, rolling out in May 2025, supports all calendar invites and requires proactive enabling by administrators. Up to 50,000 users per tenant can be synced.
Enhancements to Microsoft Purview’s Insider Risk Management (IRM) exclusions will reduce alert noise, including updates to keyword logic, file path exclusions, and domain exclusions. Public Preview starts mid-April 2025, with General Availability by early May 2025. Admins should update exclusion settings in IRM.
Shared mailboxes in the new Microsoft Outlook for Windows desktop will be displayed like accounts with a “Shared” icon. The rollout starts in May 2025 and completes by July 2025. The “Shared with me” section will be removed, and no admin action is required. Notify users and update documentation.
Microsoft 365 Copilot will soon allow users to upload files as knowledge sources for agents and enable admins to manage these agents. Rollout starts in April 2025 for admin controls and May 2025 for user capabilities. Supported file types include docx, pptx, xlsx, pdf, txt, and csv, with specific size limits. Sensitivity labels will apply to agents. No admin action is required before the rollout.
Microsoft Teams is introducing a “Manage what attendees see” feature, allowing organizers and presenters to preview changes before making them visible to attendees. This feature will be available for town halls starting mid-June 2025, with options to manage attendee views. No admin action is required for the rollout.
Microsoft Teams will introduce a new town hall meeting option called “Who has control of production tools” in May 2025. This feature allows organizers to designate who can manage the screen, start, and end the event. It applies to Teams for Windows, Mac, and the web, and does not require a Teams Premium license.
Starting May 19, 2025, Microsoft Defender for Mobile will log open Wi-Fi connections and suspicious certificate detections as events instead of generating alerts. This change aims to reduce alert fatigue while maintaining visibility. No action is required from admins, but reviewing Intune policies is recommended.
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