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So, right-click on the “Outbound Rules” option on the sidebar and select the “New Rule” option. Now we need to create a new block rule in the Outbound Rules section. In the Windows Firewall, click on the “Advanced Settings” link on the sidebar to open Firewall Advanced Settings page. To do that, open the Start menu, search for “Windows Defender Firewall,” and click on the result. The first thing we need to do is open the Windows Defender Firewall Advanced Settings. To restrict Internet access and block a program in Windows Firewall, we have to create a custom block rule in the outbound rules section of the Advanced Windows Firewall Settings. Block a program in Windows Firewall (restrict internet access to a program) Let me show you how to create a custom rule to block a program from accessing the internet using Windows Firewall. The good thing is, it is very easy to do it. No matter the reason, if there is an application that you don’t want accessing the internet, you can create a custom firewall rule to block it. However, there will be situations where you need to restrict an application’s access to the internet.įor example, the application in question may constantly be downloading unstable updates, relaying telemetry data, showing adverts or sale notifications, etc. Generally, most users never need to worry about an application accessing the internet.