How to Allow Apps Through Microsoft Defender Firewall in Windows 11

You allow apps through Microsoft Defender Firewall in Windows 11 by creating specific inbound or outbound rules.

Microsoft Defender Firewall is Windows’ built-in network security system that controls which programs can send or receive data. Sometimes, it can incorrectly block legitimate applications from accessing the internet, like a new PC game or essential work software.

This guide shows you how to grant specific permissions for these trusted applications, ensuring they can connect without compromising your overall system security. For example, you might need to allow a game’s server connection to function correctly.

By following these steps, you enable only the designated app to communicate freely, leaving the firewall active and vigilant for all other traffic. This is a much safer alternative than disabling the entire firewall.

How to allow an app through the firewall

You can manage this through your main Windows settings. Follow these steps:

1. Open the Settings app. You can press the Windows key + I on your keyboard at the same time.
2. In the menu on the left, click Privacy & security. Then, click the Windows Security box on the right.

   

3. Click the button that says Open Windows Security.

   

4. A new window will open. Click on Firewall & network protection in the left menu.
5. Look for the link that says Allow an app through the firewall and click it.

   

6. Click the Change settings button at the top. Note: This step requires administrator privileges.

   

7. Click the Allow another app… button at the bottom. Then, click Browse to find the program on your computer.

   

8. Locate the app’s file (usually in a folder like C:\Program Files\YourApp), select it, and click Open.

   

9. Click the Add button to save your changes.

Advanced Security and Troubleshooting

If the basic method fails, you may need to use Windows Defender Advanced Security. This tool allows you to create specific Inbound Rules and Outbound Rules. You can define if an app needs specific port forwarding to function correctly.

To verify your changes, use the command line. Run Command Prompt as an administrator and type: netsh advfirewall show allprofiles. This displays your current network security settings.

Summary

Microsoft Defender Firewall is a vital tool that keeps your PC safe from online threats. Instead of turning it off, which leaves your computer vulnerable, you should allow specific apps to pass through. You can do this by using the Windows Security settings menu. Keeping your firewall on is the best way to stay protected while using your favorite software.

Avoid disabling your firewall unless you have installed other security software that conflicts with it. For more information, you can read about disabling or turning off Microsoft Defender Firewall and how to protect against lock your computer for ransom.