The product is designed to work with Windows Firewall. Other personal firewalls require additional setup to work with the product.
The product uses Windows Firewall for basic firewall functions, such as controlling incoming network traffic and keeping your internal network separate from the public internet. In addition, DeepGuard monitors installed applications and prevents suspicious applications from accessing the internet without your permission.
If you replace Windows Firewall with a personal firewall, make sure that it allows incoming and outgoing network traffic for all F-Secure processes and that you allow all F-Secure processes when the personal firewall prompts you to do so.
Tip: If your personal firewall has a manual filtering mode, use it to allow all F-Secure processes.