Setup · Windows

Set up Fexyn VPN on Windows

About five minutes from a fresh install to your first connection.

Who this page is for

You're on Windows 10 or Windows 11 and want to install Fexyn VPN, sign in, and connect. The Windows app is available now in early-access Beta; full public release is expected early 2027. New accounts get a 7-day free trial, so you can run through this whole guide before paying anything.

What you'll need

Windows 10 or Windows 11, 64-bit
About 30 MB free disk space
Administrator rights for the initial install
An email address (no real name required)
A working internet connection while you set things up

1. Create your account

Sign up at fexyn.com/register. The 7-day free trial starts as soon as the account exists, not when you install the app, so creating the account first gives you the full trial window even if setup takes a while.

We'll send a verification link to your email. Click it before continuing — sign-in will fail until your email is verified.

2. Download the installer

Get fexyn-vpn-setup.exe from fexyn.com/download/windows. The installer is signed with Microsoft Authenticode through Azure Trusted Signing, so Windows SmartScreen recognises the publisher as Fexyn LLC.

If you want to verify the signature before running it, see download verification for the exact steps.

3. Run the installer

Double-click the installer and follow the prompts. Setup takes under a minute on most systems. The installer also registers a SYSTEM-level helper service that owns tunnel creation, routing, and firewall rules — that's why the app doesn't need to ask for admin rights every time you connect.

You'll be prompted once for admin rights during install. That's normal. The Wintun TUN driver is also installed and signed; Windows may show a brief driver-install notification.

4. Sign in

Open the Fexyn app from the Start menu. Sign in with the account you just created. The app talks to the Fexyn API to fetch your subscription state and which servers/protocols your plan is entitled to — this happens once at sign-in and again periodically in the background.

If sign-in fails, the most common causes are: an unverified email, a typo in the password, or a corporate firewall that blocks the auth domain. Try the same credentials in a browser at fexyn.com/login to isolate which side is broken.

5. Pick a protocol (or let the app choose)

Fexyn ships three protocols and a rotation engine that picks one for you. You can override the default from the app settings if you know your network.

Fexyn Bolt (WireGuard). Best when your network is clean. Lowest latency, lowest CPU. Try this first. More on WireGuard.
Fexyn Stealth (VLESS Reality / XRay). Best on networks that filter VPN traffic. Speaks real TLS 1.3 to a real well-known site so the connection doesn't look like a VPN. More on VLESS Reality.
Fexyn Secure (OpenVPN). The compatibility fallback. Use this when only TCP/443 is allowed out, or when WireGuard/Stealth both fail. More on OpenVPN.

6. Connect

Click Connect. The app picks a server, brings up the kill switch before the tunnel, and establishes the connection. On the first connect after install you may see Windows ask once whether to allow Fexyn through the firewall — answer yes for both private and public networks.

When the status changes to Connected, you're done. Disconnect from the same button when you're finished.

7. Verify the connection is working

Two quick checks confirm the tunnel is live and not leaking:

Visit fexyn.com/tools/what-is-my-ip — the IP shown should be the Fexyn server's, not your ISP's.
Run the DNS leak test — DNS responses should resolve through the tunnel, not your ISP's resolver.

If either check fails, head to VPN not connecting.

Common first-time issues

SmartScreen warning. If you see "Windows protected your PC", click "More info" and confirm the publisher is Fexyn LLC. SmartScreen conservatively flags new installers; the signature is the authoritative authenticity check.
Driver install hang. Reboot, then re-run the installer. Wintun installs cleanly on a fresh boot.
Antivirus quarantine. A few aggressive AV products quarantine VPN drivers blindly. Whitelist Fexyn (the install path is C:\Program Files\Fexyn VPN) and re-run the installer.