This update includes reliability improvements to Windows Update Service components in consumer Windows 10, versions 1507, 1511, 1607, 1703, 1709, 1803, 1809, 1903, 1909, 2004, and 20H2. It may take steps to free up disk space on your device if you do not have enough disk space to install Windows updates.
This update includes files and resources that address issues that affect the update processes in Windows 10 that may prevent important Windows updates from being installed. These improvements help make sure that updates are installed seamlessly on your device, and they help improve the reliability and security of devices that are running Windows 10
Microsoft Update Health Tools (KB4023057)