How to Allow Apps Through Microsoft Defender Firewall in Windows 11

How to allow an app through the firewall

To allow an app through the firewall in Windows 11, you add an exception in the Windows Security settings. The program can then connect to the network without being blocked. This grants access to one specific game or tool while the rest of your system protection stays on.

You can do all of it from the Settings app and the Windows Security window, with no extra software. You need an administrator account, or the password of one. You do not need to restart the PC afterwards.

1. Open the Settings app. Press Win+I on your keyboard at the same time to open it quickly. The Settings⚙️ window opens with the list of categories on the left.

   

2. In the menu on the left, click Privacy & security. Then click the Windows Security box on the right. The Windows Security page opens and lists your protection areas.

   

3. Click the button that says Open Windows Security. The Windows Security app opens in its own window.

   

4. In the new window, click Firewall & network protection in the left menu. The page shows your three network profiles: Domain, Private and Public. Domain is for a workplace network, Private is for networks you trust such as home, and Public is for shared networks. The profile marked as active is the one your PC is using right now.
5. Look for the link that says Allow an app through the firewall and click it. A classic Control Panel🎛️ window called Allowed apps opens. The list shows every app and feature the firewall already knows about, with checkboxes for Private and Public networks.

   

6. Click the Change settings button at the top. Note: This step requires administrator privileges. If User Account Control asks for permission, click Yes, or enter an administrator password. Until you do this, the list and the buttons below it are greyed out. If Change settings stays greyed out after that, your account is a standard one, or a policy from your workplace or a third-party security suite is managing the firewall.

   

7. Click the Allow another app… button at the bottom. An Add an app window opens. Click Browse to find the program on your computer. If the app is already in the list, you don’t need to add it. Tick its checkbox instead.

   

8. Locate the app’s file (usually in a folder like 📁C:\Program Files\YourApp)copy, select it, and click Open. Choose the program’s .exe file, not a shortcut or a folder. Some 32-bit programs are in Program Files (x86) instead. Games installed through a launcher often sit in the launcher’s own library folder. The app’s name and path now appear in the Add an app window.

   

9. Click the Add button to save your changes. The app now appears in the Allowed apps list. Check its Private and Public boxes, then click OK to apply the change.

Tick Private for networks you trust, such as your home Wi-Fi. Tick Public only if the app must work on networks like cafe or airport Wi-Fi, because those carry more risk. If the app still cannot connect, close it and open it again so it makes a fresh connection.

Advanced Security and Troubleshooting

Windows Defender Advanced Security offers more control if the basic method doesn’t work for allowing apps through the firewall. The advanced console lets you create rules for a specific program, port or direction of traffic (inbound or outbound). A port is a numbered channel that an app uses to send or receive data.

Rules like these help with servers, game hosting and other cases where the basic allow list is not enough. Find the console by searching for the firewall’s advanced settings in the Start menu. Changes there also need administrator rights, so only create rules you understand.

To verify your changes, use the command line. To open an elevated Command Prompt (one that runs with administrator rights), search for it in the Start menu, right-click it and choose Run as administrator. Then type: netsh advfirewall show allprofiles. This displays your current network security settings.

Read through the output and confirm that the firewall is on for the profile you use. You can also reopen the Allowed apps window and check that your app’s boxes are still ticked.

Summary

Managing your firewall rules properly lets you allow apps through firewall settings without leaving your computer exposed to outside threats. Keeping the main security system turned on while unblocking only trusted programs is the safest way to fix connection problems.

Allow only apps you downloaded from a source you trust. Turn off the firewall completely only if you use a different security suite and know the risks involved.

Disabling the Microsoft Defender Firewall is not recommended unless you have installed other security software that conflicts with it. Turning it off can leave your computer vulnerable, including to ransomware, which is malware that locks your files until you pay. Read up on those risks before you disable the firewall. If a single app is the problem, allowing only that app is almost always the better fix.