Microsoft has confirmed that three of its companion apps—Calendar, People, and Files—will no longer be supported starting December 2026. These apps, which were designed to integrate with Microsoft 365 services, have already begun appearing automatically on Windows 11 devices that are linked to Microsoft 365 accounts, with the rollout starting in late 2025. While the apps themselves will be phased out, the data they manage, such as contact details and files, will remain accessible through other Microsoft 365 services like Outlook, Teams, and OneDrive. The decision comes as part of Microsoft’s broader strategy to streamline its software ecosystem and encourage the use of more integrated tools. The company is urging users to transition to Outlook and Teams for managing calendars and contacts, and to use Windows Search Box, File Explorer, SharePoint, and OneDrive for file storage and management. Additionally, Microsoft is promoting the use of its AI-powered assistant, Copilot, to help users access and organize information more efficiently. It’s important to note that the affected apps will not be automatically removed from users’ devices. Instead, administrators—such as those managing business or educational networks—will need to manually uninstall them. This gives users and IT professionals time to prepare for the transition and ensure that their data and workflows remain uninterrupted. Microsoft will also stop providing security updates for these apps after December 2026, which means they will become more vulnerable to potential security threats over time. Users are encouraged to review their current workflows and make necessary adjustments to ensure a smooth transition to the recommended alternatives.