Starting with the next major update Microsoft is making a few changes to how Windows 10 manages disk space. Through reserved storage, some disk space will be set aside to be used by updates, apps, temporary files, and system caches. Microsoft’s goal is to improve the day-to-day function of your PC by ensuring critical OS functions always have access to disk space. Without reserved storage, if a user almost fills up her or his storage, several Windows and application scenarios become unreliable. Windows and application scenarios may not work as expected if they need free space to function. With reserved storage, updates, apps, temporary files, and caches are less likely to take away from valuable free space and should continue to operate as expected. Reserved storage will be introduced automatically on devices that come with version 1903 pre-installed or those where 1903 was clean installed. You donâ€™t need to set anything upâ€”this process will automatically run in the background.
The Reserved Storage feature is available for testing to Windows Insiders running build 18298 or newer.
This tutorial will show you how to enable or disable the Reserved Storage feature for Windows Update in Windows 10.