The solution is simple to go back to 1803 from the new Windows 10 1809 October 2018 Auto-Update!
However, the 1809 release has now been paused for all users, as more reports are to be examined by users who are missing some files after upgrading Windows 10, Microsoft also writes on its official Windows 10 support website.
But this is not a problem in the sense you can easily reset the Windows 10:
It only becomes a problem if you have done disk cleanup on Windows 10:
Only a clean reinstallation of Windows 10 helps: ► ... a clean installation of Windows 10 !
Others may get Windows 10 version 1809 to install just fine on a device but .... Thank God you can go back to the previous windows version.
► Bugs and issues of Windows 10 version 1809 - gHacks Tech News!!
In this Windows 10 guide, we'll look at some of the problems you may run reinstall installing version 1809 , you're likely to get errors alternatively, you can go back to the previous version of Windows 10!
► Windows 10 October 2018 Update common problems and fixes!
Windows 10 1809 bungle: We won't miss early problem reports again, ... Back up files before upgrading to Windows 10 1809!
► Windows 10 1809 bungle: We won't miss early problem reports again!
Microsoft cites problems with the latest update package deleting and has paused the rollout of Windows 10 October 2018 Update version 1809, the latest version of Windows 10 October 2018 Update:
► Microsoft pulls Windows 10 October Update (version 1809) | ZDNet
However, it is holding back on releasing the new operating system Things could get tough for Windows 10 version 1809 users who lost data.
► Microsoft Fixes and Explains Lost Files Issue with Windows 10 Version!
FAQ 27: Updated on: 11 October 2018 15:51