To reflect this change, the release notes for Windows 10, version 1903 and Windows 10, version 1909 will share an update history page. Each release page will contain a list of addressed issues for both 1903 and 1909 versions.

This update makes quality improvements to the servicing stack, which is the component that installs Windows updates. Servicing stack updates (SSU) ensure that you have a robust and reliable servicing stack so that your devices can receive and install Microsoft updates.

Learn how you can go back to the previous version of Windows you had installed.

To learn more about differences between security updates, optional non-security preview updates, out-of-band (OOB) updates, and continuous innovation, see Windows monthly updates explained.

Learn more about this setup dynamic update, including improvements and fixes, any known issues, and how to get the update.

Learn about the terminology that Microsoft uses to describe software updates. Learn more about update KB4505057, including improvements and fixes, any known issues, and how to get the update.

Describes the Windows Installer 3.1 v2 download that is available as a redistributable system component for Windows 2000 SP3, Windows 2000 SP4, Windows XP, Windows XP SP2, and Windows Server 2003.

On the lower left side of this page, you’ll find a list of all the updates released for this version of Windows. You can also find more information about releases and any known issues.

On the left side of this page, you can find a list of all the cumulative updates for .NET Framework that were released for this version of Windows. You can also find more information about releases and any known issues.

Support for Windows 10 has ended on October 14, 2025 After October 14, 2025, Microsoft will no longer provide free software updates from Windows Update, technical assistance, or security fixes for Windows 10.