Are you booting up your Windows 10 machine and discovering you can’t log in to your profile? It appears you’re not alone. Reports are increasing across Twitter and Microsoft forums that following the most recent Patch Tuesday update (KB4532693), users are complaining that their profiles and desktop files are missing, and that custom icons and wallpaper have all been reset to their default state.
The generally accepted solution to this problem is browsing to the C:\Users folder with Explorer and checking for a folder named “.000” or “.bak.” Once you’ve tracked it down you can create a new Administrator account, log in to that account, then copy the folders and files back where they belong (Documents, Pictures, Music, Desktop, etc).
Bleeping Computer, however, is also reporting that several readers resolved the issue by rebooting “several times” or just uninstalling the troublesome KB4532693 update. The site also states Microsoft is aware of the issue and is investigating.