How to block program in firewall windows 10

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A firewall protects computer systems from unwanted contact initiated by other computers connected over the internet or a network by blocking harmful programs based on user-defined rules. Individual services and applications can be granted access to pass through the firewall.

This article explains how to block a program in a firewall to help you protect your system from unwanted access.

Steps to Block a Program in a Firewall

This tutorial on how to block a program in a firewall applies to computers running Microsoft Windows 11 operating system.

How to block program in firewall and add lines to host file

Some details might vary slightly for Windows 10 or older versions, but the procedure is essentially the same.

1. Open the Settings for Windows Defender Firewall with Advanced Security 

Use one of the following methods to open the Windows Defender Firewall with Advanced Security.

Method 1

• Press the Windows k
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