How to open Windows Firewall in Windows 11/10 The Windows Defender Firewall can be configured to allow or block programs on a computer from accessing network or Internet resources.

How to allow apps blocked by PUA on Windows Defender Antivirus In the case that the feature blocks an application you know that can be trusted, you can allow the app using these steps: ...

Do note that if the Smart App Control is turned off by default, it can’t be turned on without re-installing the Windows on the PC. Then enable Reputation-based protection.

Figure C What happens if you turn the firewall off? To allow a specific application to pass through the Windows Defender firewall, you will have to add it to the list of other permitted applications.