I advanced on the problem and i am very confused…
I identify problem is just after post download scripts.
I say that because in my multiple tests if i shutdown computer just after sed, cancel fog tasks and boot on Windows 10 1803 the name is correct !
See screenshot of step where i ientify problem occurs :
In tests where windows computer name is correct i shutdown computer just before this screen.
As i saw rubric “Changing hostname” i search in my web FOG Settings :
-FOG Client - Hostname Changer was enabled : Now DISABLED
-General Settings / Change Hostname early was enabled : Now DISABLED
After disable this two settings it’s ok …
2 months to identify this !
Very thanks for your helps and guidance to post download scripts.
I was convinced that it was coming from Windows/Sysprep.
Don’t know why that did not bother Windows 10 1709.