@kronflux Do You try disconect internet and then install?
Interesting. Do you try: - Other autounattend.xml file? - Do not use SetupComplete.cmd ? - Put to iso file boot.wim from older version ?...
Try keep Advertising
Can You add switches for no mount Boot and Recovery ? AppxWhitelist.xml is good choice for WindowsApps can You make for example...
Yes, integrated ok.
Save as DisableDefender.cmd Run after instalation, and this will disable services for Defender. reg add...