I am the person who started this post.
I am happy someone solved the problem with the fixes suggested recently.
I did not, even if I tried all solutions suggested here and elsewhere..
Now my error has evolved into the following, as I guess the new cumulative critical update replaced the old.
Error messages are variable but it is a few days it is 0x8000ffff
2018-01 Cumulative Update for Windows 10 Version 1709 for x64-based Systems (KB4056892) - Error 0x8000ffff
2018-01 Security Update for Adobe Flash Player for Windows 10 Version 1709 for x64-based Systems (KB4056887) - Error 0x8000ffff
If anyone can help or has other ideas, please write.
I am thinking to do an in place upgrade with the same version using the media creation tool but am a bit reluctant. For the moment I updated everything else and using a VPN to minimise Meltdown risk.
One more thing. Cannot complete sfc / scannow as it says a repair is pending after restart (this is a loop).
Tries the DISM command (DISM /Online /Cleanup-Image /RestoreHealth) even with an outside image of 1709 created with media creation tool but did not solve, stops at 87%. Maybe
someone can read into that.