Windows Updates need a lot of disk space, which is a problem on devices with small amounts of internal storage. Microsoft is fixing this by “reserving” some disk space for updates in the next version of Windows 10, codenamed 19H1.
Microsoft has been pushing cheap laptops with small hard drives for years now. But anyone who has ever used one has quickly run into a major issue: They usually don’t have enough storage left over to install major updates. This leaves them without important patches, security fixes, and new features. While you shouldn’t update to the latest version of Windows on the first day, you do want to eventually get there. So this is a serious problem.
Right now, the workaround is to either delete as many files and programs as possible or download the update to external storage. Neither answer is always easy, especially for a college student who has a cheap device, no USB drive, and a need to keep all their files and programs.
Read more: https://www.howtogeek.com/fyi/windows-10-will-soon-reserve-7-gb-of-your-storage-for-updates/