https://www.techradar.com/news/windows-10-october-2018-updates-disk-cleanup-could-delete-the-contents-of-your-downloads-folder

While Microsoft has apparently fixed the worrying file deletion bug we’ve seen with the Windows 10 October 2018 Update – at least for testers at the moment, anyway – there’s another issue those who have installed the upgrade should be aware of, namely that a change made to Disk Cleanup now means that it can potentially clear out files in the Downloads folder.

The October 2018 Update changes this system utility to add the option to clean out your Downloads folder by simply checking a box, and that could be useful for some folks – if they want the folder to be given a spring clean.