DavidR
5
Personally I would never use an on-line installer, I prefer to download and save the standard off-line installation file. That way whilst you you retain control over what is happening between uninstalling the current version (if you were having any problems) and installing the new version.
Having saved the off-line installation file, you have a copy that should you need to can be reused.
Whilst you have to be on-line to register, there is no need to be on-line to install, once you install you can register from the avastUI.