A modified version of Windows 10 October 2018 Update appeared in which user data loss was reported

by rawpixel

Microsoft responded to the Windows 10 October 2018 Update, which had been suspended due to the problem that the user data was deleted without permission, and we restarted the disclosure to the Windows Insider community limitedly.

Updated version of Windows 10 October 2018 Update released Windows Insiders - Windows Experience BlogWindows Experience Blog
https://blogs.windows.com/windowsexperience/2018/10/09/updated-version-of-windows-10-october-2018-update-released-to-windows-insiders

According to Microsoft, the problem of data loss has used the redirect function of the folder "Known Folder Redirection (KFR)" in the past, and when the file exists in both "redirect source" and "redirect destination" It is said that it occurred.

While it is rare to hear the name of the function "KFR" on a daily basis using Windows, folders such as "desktop", "download", "picture", "music" It is possible to change to an arbitrary folder.

For this feature, there was feedback that an extra empty folder will remain on the redirect source even after the file was moved from the user to the redirect destination, so October 2018 Update added an action to delete duplicate empty folders It was. However, it was said that the redirect source was completely erased by this.

Also, even when using OneDrive, the original file was left in the redirecting source, and the file was erased entirely by October 2018 Update occurred.

With Microsoft assuming multiple "data erase" scenarios, we devised a way to solve everything, updated the content of the October 2018 Update, first began delivery to the Windows Insider community. In the future, information collection is to be carried out for re-release for the general public.