Microsoft to Phase Out OneNote for Windows 10 by October 2025

Microsoft has announced that support for OneNote for Windows 10 will officially end on October 14, 2025. This move aligns with the broader cessation of support for the Windows 10 operating system itself. Users are being encouraged to transition to the newer OneNote app available with Microsoft 365 to ensure continued access to updates and features.

In preparation for this transition, Microsoft plans to implement changes that will affect the functionality of OneNote for Windows 10 prior to the support end date. Starting in June 2025, users may experience slower synchronization performance, which could impact real-time collaboration and multi-device access. By July 2025, in-app notifications will begin prompting users to migrate to the updated OneNote application.

The decision to discontinue support is partly due to the older application's lack of compatibility with Microsoft Information Protection sensitivity labeling, a feature deemed essential for securing sensitive data. Microsoft emphasizes that transitioning to the updated OneNote app will provide users with enhanced security features, improved performance, and integration with AI-powered tools like Copilot.