I use an HP and I didn't lose any files. So that is not the issue here.
So why is the HP issues extensively written and complained about 'here'? I have never ever had problems with W10 and its updates (that is of all 2018-10 Cumulative Updates'). its been the most reliable windows EVER!!!! Yes, some updates didnt install internally through 'Windows Update' especially with v1809 but, I installed and downloaded the v1809-17763.1 directly with*"Windows 10 October 2018 Update installation media*" file name 'Windows10Upgrade9252.exe' (on 3 computers) and the '2018-10 Cumulative Update-17763.55' file 'windows10.0-kb4464330-x64_e459c6bc38265737fe126d589993c325125dd35a.msu' downloaded at 'https://support.microsoft.com/en-au/help/4464619' and they all installed and worked perfectly. I also use 'OneDrive' extensively through Office 365 and I've never ever had any issues affecting 'OneDrive' and loss of files, even when its synched while an update was downloaded and installed and that includes v1809. My computer works perfectly and without any issues.