Quote:The Windows 10 KB4532693 update appears to be buggier than originally thought as users are reporting that the update is deleting their files.
 
After the Windows 10 KB4532693 cumulative update was released last week, users started to report that their desktop and Start Menu was reset to the default settings and that they could no longer find files stored in their user profile.
 
After further investigations, it was discovered that during the installation of the update, the user was switched to a temporary profile, their original profile was backed up with a .000 or .bak extension, and a bug prevented the update from restoring the normal user profile when done.
 
To resolve this, users found they could restart Windows a few times or uninstall the update to get their normal profile back.
 
At that time, Microsoft's only statement to BleepingComputer was that they are aware of the issues and are investigating them.
 
It turns out that the problems with this update may be worse than their profiles being backed up and having to be restored.
 
Since our last article, comments at WindowsLatest.com and users in the Microsoft forums and on Twitter have been reporting [1, 2, 3, 4, 5] that their user profile and files are completely missing and that they had to use backups to restore their deleted files.
 
If the profile was deleted, that means that any files stored in the Documents, Downloads, Music, Pictures, and Videos folders would have been deleted as well. This also includes any program data stored under the user profile.
 
To get this update installed without losing data, one user had to perform a crazy procedure of backing up their user profile before performing the update and then restoring it after so that they had their files.