If you normally use the Disk Cleanup tool in Windows 10 to remove temporary and unnecessary files, after installing the Windows 10 October 2018 Update you need to be more careful. This is because Microsoft has quietly add the “Downloads” folder as an additional location that files can be removed.  […]

from https://www.bleepingcomputer.com/news/microsoft/psa-disk-cleanup-cleans-downloads-folder-in-windows-10-october-2018-update/