Windows 10 October 2018 Update is deleting user data — here's how to protect yourself
Found on Windows Central on Saturday, 06 October 2018
Shortly after the new version became available as a manual download (using the Media Creation Tool, Update Assistant, and Windows Update) several users started reporting that the upgrade process is wiping out their documents, pictures, and other personal files along with previously installed programs.
If your device still hasn't received the new version, remember that you can delay the upgrade until you know for sure that data loss and other problems have been resolved.
Well that didn't take long for Microsoft to mess up even more. The problems with Intel's audio were annoying, but this one is a total roadblock that should have halted the rollout during the QC process. Funny is how MS fanboys just point at creating full backups (and of course backups are always a very good idea which should be done regularly).