Windows Firewall can help prevent hackers or malicious software from gaining access to your PC through the Internet or a network.
Over time of allowing apps through the firewall and setting rules, you may need or want to completely reset Windows Firewall to default. Restore defaults would include turning on Windows Firewall for all network profiles, reset notification settings to default, remove all added apps and features that you allowed and denied, and reset Windows Firewall with Advanced Security settings to default.
This tutorial will show you how to completely reset and restore Windows Firewall settings to default in Windows 10.