The user's data disappears Another update to the data annihilation problem emerges due to the Windows 10 update problem, the workaround is

In response to the problem that the user data is erased arbitrarily in the Windows 10 large update "Windows 10 October 2018 Update" that had been distributed on October 2, 2018, Microsoft has released a new revised update update It is clear that there is another data annihilation problem. This problem is occurring when dealing with compressed files such as ZIP data.

Windows 10 version 1809 plagued by another data loss issue - gHacks Tech News
https://www.ghacks.net/2018/10/20/windows-10-version-1809-plagued-by-another-data-loss-issue/

Microsoft made a major update of Windows 10 on October 2, 2018 and started distributing "Windows 10 version 1809". However, immediately after that, the data in the default "document" folder is erased successively. Some users reported damage when the update was done that the free space of the storage had increased by 60 GB (= the file was erased arbitrarily)

"Windows 10 October 2018 Update" will stop delivering due to a serious problem that user data is erased arbitrarily - GIGAZINE

In response to this problem, Microsoft suspended distribution of update files once. A few days later I began distributing the updated version of the update file, but it is becoming clear that this updated version also has problems concerning data annihilation.

What is common to the new problem is the situation "when dealing with archive data". According to the contents posted to reddit, it is said that the dialog "Do you want to update the file?" normally displayed when you decompress the zip data and overwrite the existing file is not displayed is.

In another report , when the same operation is performed, overwriting of the file is not completed and the original file is left as it is, furthermore, a dialog notifying the user is not displayed like "failed" A state is said to occur.

For reddit, this issue is suggested that suggests that this happens when dragging and dropping the data contained in the compressed file. In that case as well, although it seems as if the file decompression and overwriting seemed to be done normally, in fact the file was not updated and the old old data was left as it was Thing.

Windows 10 1809 File copy problem - anyone else experience this: Windows 10
https://www.reddit.com/r/Windows10/comments/9mxl3d/windows_10_1809_file_copy_problem_anyone_else/

Taken together, the reported information seems to be occurring when using this Windows file compression / decompression function. In the meantime, it seems that this problem can be avoided by using third party compression / decompression software.