User error my #@@.
Apparently you people don't get it.
I did nothing but letting Avast update itself.
If it is not "recommended" then why Avast has got the auto-update feature?
It is not about giving up easily, it is about:
- It is not "normal" to get errors after an update. When it happens, you cannot trust the software any more.
- it is not "normal" that a software hangs at boot and refuses to uninstall from control panel. Yes, you can probably fix the issue given that you spend hours on it. Maybe. Maybe next time you can't.
- Once you have worked around the issue, why should you go looking for more installing the same bugged software AGAIN?
Finally, the fact that older versions of Windows aren't fully supported, despite the "optimistic" system requirements, is getting annoying.