Servicing stack update for Windows 10, Version 1903: July 26, 2019

This update makes quality improvements to the servicing stack, which is the component that installs Windows updates. Key changes include:

• Addresses an issue in which an update may not install with certain other updates and upon start up after installation of the other updates, will require a second scan of Windows Update and a second restart to complete installation.
• Addresses an issue in which reserved disk space may not be returned to free space when installation of Language Packs or Features on Demand (FODs) fails or is canceled.  The disk space is returned to free space when Storage Sense is run.
• Addresses an issue when Windows Update Check for updates is run during the installation or uninstallation of an update, Features on Demand (FODs) or Language packs, which may cause the installation to fail and may cause a restart to take up to an hour.

Microsoft strongly recommends you install the latest servicing stack update (SSU) for your operating system before installing the latest cumulative update (LCU). Installing servicing stack updates (SSU) ensure that you have a robust and reliable servicing stack so that your devices can receive and install Microsoft security fixes.

Prerequisites

There are no prerequisites for installing this update.

Restart information

You don't have to restart your computer after you apply this update.

Update replacement information

This update replaces the previously released update KB4509096. 

For more information about SSUs, see Servicing stack updates.
Learn about the terminology that Microsoft uses to describe software updates.