The best free VPN for Windows 11 PC 2025?

VPN is the first choice when you can't visit a site with the local ISP. A VPN establishes an encrypted connection, often referred to as a "tunnel," between your device and a VPN server. This encryption ensures that any data transmitted between you and the server is protected from prying eyes.

By routing your internet traffic through the VPN server, your real IP address (which can reveal your location and identity) is masked. Instead, websites and online services see the IP address of the VPN server. Many people use VPNs to access content that might be restricted in their region. Since the VPN server can be located in a different country, it can help bypass geo-blocks on websites and streaming services.

How Does a VPN Work?

1. You start by launching a VPN client on your device (this could be an app on your computer, smartphone, or tablet).

2. The client authenticates your credentials with the VPN server (using a username/password, certificates, or other authentication methods).

3. Once authenticated, the VPN client and server agree on an encryption protocol (such as OpenVPN, IPSec, L2TP, or WireGuard). This protocol encrypts your data, turning it into a secure, unreadable format while it’s in transit.

4. The VPN server acts as an intermediary between you and the internet. It sends your requests (e.g., accessing a website) on your behalf, and the website sees the VPN server’s IP address instead of your real IP address. The data you request is sent back to the VPN server, where it is encrypted again, transmitted securely through the tunnel, and then decrypted on your device.

5. Once the encrypted data reaches your device, your VPN client decrypts it so that you can view or interact with the content as usual. Throughout this process, your connection remains secure and private, even if you are using an unsecured public Wi-Fi network.

So VPN is a powerful tool for enhancing your online security and privacy. By choosing the best free vpn for Windows 11 in 2025, it protects your data from interception, masks your real IP address, and can help you access geographically restricted content.