Moreover, applications are missing form the list of applications. Is it possible to browse for an application that you want to block (as it used to be available in previous version) ?
Avast One Essential and Avast Free Antivirus are different products. Is it not possible to browse for an application that you want to block. If applications are missing from the list of applications, it generally implies that they have not tried to connect to the internet yet. If the applications have tried to connect to the internet and are still not present in the list, please provide a screenshot and support file ID. https://support.avast.com/en-ww/article/Submit-support-file
Dev-Info:To set expectations right, Avast One is not a replacement of the Antivirus or other Avast products. Avast One is a new product line with a distinct feature set. Pre-existing products remain available, should you prefer to keep those.
I have a new issue with the firewall.
I can no longer see the blocked applications below the application list.
So how do I re-activate a blocked application?
@ ulambert
Be aware that Avast Free now has a firewall component, so the same issue could be same. However on installing Avast Free (after uninstalling Avast One) the firewall component shouldn’t be installed by default. So exercise care during installation if you do go back to Avast Free, a clean install of Avast Free would be best, uninstall Avast One reboot and then install Avast Free and reboot.