Avast Free Offline installer is not working on 2 Win 10 laptops so far when installed over existing avast 18.8.2356. When I restore from image backup, the live program update from the v18.8 GUI is (apparently) successful although I haven't yet found my old custom scans or a way to recreate them.
The offline installer results eventually in a product that will not run Avast service, so the GUI fails to start with a "Well, this is embarrassing" message. The entire sequence goes like:
>Run offline installer, custom install same components as v18.8 (about half of what's available)
>Reboot when instructed
>Run GUI, Software Updater shows Error w/Refresh button that does nothing, Smart scan hangs @33%, Wi-Fi Inspector hangs @0%
>Reboot again
>Try GUI again, get "Won't start" and Retry button does nothing.
>In Task Manager window, Avast installer comes and goes, same with Emergency updater, but eventually Avast service fails
Both systems are Win 10 v1809 with all current patches. Curious whether other failed installations have used the Offline installer.