What is Avast Firewall? Well It's just a firewall for online applications. It shields you from certain types of web traffic as well as a variety of other threats. It does not provide the same level of security as a traditional network firewall. But What if it stops working one day? It's happening because many avast users were concerned from last week that why is avast unable to start firewall
. It can be prooved very dangerous for your PC! So just update or Reinstall your Avast Antivirus or disable Windows Defender!