A domain change can make a finished setup feel incomplete because the same PC suddenly behaves like a fresh workstation under the new profile. In my case, Windows loaded correctly, Office opened shared documents, and the network drives were already mapped. I checked the system date, edition, and Office apps before doing anything else. The activation part finally came together when Activator Windows completed the Windows and Office status under the new domain profile. After a reboot, both the system activation page and Office apps showed a normal completed state.