How to Reset Firewall Settings in Windows Defender

The Windows Defender Firewall helps protect your computer by controlling incoming and outgoing network traffic. It blocks unauthorized access while allowing trusted apps and services to communicate over the internet or local network.

Sometimes, however, firewall settings may become misconfigured due to software changes, incorrect rules, network problems, or troubleshooting attempts. In such cases, resetting the firewall to its default settings can resolve connectivity issues and restore proper protection. This guide explains how to reset Windows Defender Firewall settings safely in Windows.

Method 1: Reset Firewall Settings Using Windows Security

The easiest way to reset the Windows Defender Firewall is through the Windows Security interface.

1. Click the Start menu, type Windows Security, and open the app.

2. Inside Windows Security, select Firewall & network protection from the left-hand menu.

3. Scroll down and click Restore firewalls to default. Windows will open a settings page that allows you to return the firewall configuration to its original state. 

4. Click the Restore defaults button.

5. A confirmation prompt will appear explaining that all Windows Defender Firewall settings will be deleted and reset. Click Yes to confirm.

Method 2: Reset Firewall Settings Through Control Panel

If you prefer using the classic Control Panel interface, you can reset the firewall there as well.

1. Press Win + R, type control, then press Enter to open Control Panel.

2. Change the View by option in the top-right corner to Large icons or Small icons. Click on Windows Defender Firewall.

3. In the left panel, click Restore defaults.

4. On the next screen, click Restore defaults again and when Windows asks for confirmation, select Yes.

Method 3: Reset Windows Defender Firewall Using Command Prompt or Powershell

Advanced users can reset the firewall instantly using a command.

1. Click the Start menu, type cmd, then right-click Command Prompt and select Run as administrator.

Type the following command and press Enter:

netsh advfirewall reset

3.You can also use the following command in PowerShell:

(New-Object -ComObject HNetCfg.FwPolicy2).RestoreLocalFirewallDefaults()

Conclusion

If apps stop connecting to the internet, or firewall settings seem broken after software installation or configuration changes, performing a firewall reset is often one of the simplest troubleshooting steps to try. Whether you use Windows Security, Control Panel, or Command Prompt, the process only takes a few minutes.