Block Internet Access to Apps! You can disable a program from connecting to the internet using CMD or Outbound Rules of Windows Firewall.

How to manage the built-in firewall on Windows 11 On Windows 11, the Microsoft Defender Firewall comes enabled by default, and you can turn it off or on as needed, allow or block apps, customize ...

If your antivirus or firewall is blocking the VPN from working properly on your Windows 11/10, then follow these suggestions to resolve the issue.