Windows Firewall can help prevent hackers or malicious software from gaining access to your PC through the Internet or a network.
Sometimes you may need to allow an app through Windows Firewall. When you allow an app to communicate though the firewall, it’s called adding an exception or rule.
Usually this will happen automatically. Windows will automatically create exceptions for its own system services and apps. When you install a new app that wants to communicate through the firewall, Windows will prompt you to allow access for it to do so.
You may also want or need to create an exception manually to allow an app to communicate through the firewall.
This tutorial will show you different ways on how to manually remove or add apps to be allowed through Windows Firewall in Windows 10.