Windows 10 October 2018 update re-introduced after squashing file-deletion bug
The Windows 10 1809 October 2018 update had a critical flaw where many users noticed data deletion for no reason. As reports started piling, Microsoft had to pull down the update and its Windows 1809 complete installation ISO file. Affected users should contact Microsoft technical support since there is a possibility of recovery.
Earlier, it was assumed to be a OneDrive problem but many users dismissed the same on Reddit.
Naturally, the assumption was that Microsoft will fix the problem. The Windows 10 October 2018 Update (Redstone 5) was re-introduced and available for download.
Microsoft owed an explanation and therefore said the follows:
“File loss occurred if Known Folder Redirection (KFR) had been previously enabled, but files remain in the original “old” folder location vs being moved to the new, redirected location. KFR is the process of redirecting the known folders of Windows including Desktop, Documents, Pictures, Screenshots, Videos, Camera Roll, etc. from the default folder location, c:\users\username\<folder name>, to a new folder location. In previous feedback from the Windows 10 April 2018 Update, users with KFR reported an extra, empty copy of Known Folders on their device. Based on feedback from users, we introduced code in the October 2018 Update to remove these empty, duplicate known folders. That change, combined with another change to the update construction sequence, resulted in the deletion of the original ‘old’ folder locations and their content, leaving only the new ‘active’ folder intact.”
Microsoft said that the bug affected 1/100th of 1% of its users. This alone is a large number of users since Windows 10 is used worldwide. It was good Microsoft pulled down its update and work on the fix.
The update also fixed some minor issues. It patched a bug which deletes user profiles due to incorrect time calculation if ‘Delete user profiles older than a specific number of the day’ option is enabled. It also introduced security patches for its kernel, Internet Explorer and Media player.
— Hardware BBQ (@HardwareBBQ) October 12, 2018