Really working fix, without messing around your system:
https://answers.microsoft.com/en-us/windows/forum/windows\_10-performance/fresh-install-of-fall-creators-update-state/05537633-d0fa-4ecd-aa66-a7b05abb194f
Check my last post of 31 december
Unpluging LAN cable during the install procedure (I let it till teh end of install), fixed it and no issues after a week
I had my very first install work with LAN cable.
Only changes in the next failed installs were:
- added a user credential in my Netgear NAS to allow login to SMB share since MS changed the way Enterprise editions negociate access to smb (aka dropping the guest without prompting for access credentials to the server)
- turned on my NAS before setting up the proper Workgroup name in windows 10
However, I didn't try to reproduce the issue with LAN cable plugged in and the NAS turned off as I am happy with my working install
Hope these info help others to reinstall windows (only really working proper fix) and helps MS to fix the issue