Earlier, in October 2018, Microsoft released the sixth major Windows 10 update “code-named Redstone 5” that led to Documents folder deletion.
The issue was widely reported and discussed, which led Microsoft to pause the update and fix the file deletion bug in their Windows 10 October 2018 release. Apparently, the recent re-released patched update is also reported to have another file deletion bug.
This time it’s related to the Windows inbuilt file compression utility. Multiple reports from several users—who installed the subsequent October 2018 update—indicate that decompressing a ZIP file overwrites the existing files without any user prompt.
How the NEW Bug Causes Data Loss
Usually, when a user unzips a compressed ZIP folder to a location in Windows, where the same files already exist, the operation halts and Windows prompts the user whether to overwrite the existing files. However, in the recent Windows 10 October 2018 patched update, this seemed missing as per reports on Ghacksand Ask Woody.
As per reports, now when you unzip a file to the folder location, it simply overwrites the existing files automatically without any prompt.
In such case, the newer file, that user might have edited or modified also gets overwritten leading to data loss.
The bug appears to affect the inbuilt ZIP- compression feature in Windows 10 and does not affect any third party file compression app.
Ever since the October [Win10 1809] update, the overwrite confirmation is missing from zip files I noticed that whenever I move something out of a zip, the “do you want to replace these files” dialogue never shows up, it just does it.I’ve reinstalled windows and it still does it, it’s only on the October update. Pretty nasty bug since you can accidentally overwrite a file and have no way of getting it back
A few users also reported another issue with Windows File Compression feature where the extracted files do not replace the existing files at all, which is equally bad. Even the drag and drop feature is reported to be broken.
Here’ what a user on Reddit posted:
When dragging newer files (with the same name as in the destination folder) from a compressed folder to a regular folder it looks like the file copy happens, you can see the transfer progress, but when you check after no files have been updated. Anybody else have this?
This is What You Need To Do!
It will be better to wait for another re-release of Windows October 2018 update. In case you have already updated, do not use the Windows inbuilt File compression feature. Instead, install and use a third party file compression (ZIP) utility in the meanwhile.
However, in case you have lost your data after the Windows 10 October 2018 update or by using the compression utility, use a data recovery software such as Stellar Data Recovery Professional for Windows to recover the deleted files. While recovery of overwritten files isn’t assured, options such as ‘Deep Scan’ can still help you find out traces of recoverable data and restore it.
Download the software now for a quick and secure recovery of your lost data.
Satyeshu is a Windows blogger and data recovery expert. He is having good technical knowledge and experience in Windows data recovery. He writes about latest technical tips, Windows issues and tutorials.