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Talk to a HumanIf you are not seeing a VPN network adapter when using Lightway – UDP, you’ve likely enabled Lightway Turbo, an upgraded version of our Lightway protocol that can give you extremely fast upload and download speeds and lower latency (ping).
Why is Lightway Turbo not showing a VPN adapter?
When Lightway Turbo is enabled with Lightway – UDP, ExpressVPN uses a high-performance packet filter (PKF) driver engineered by the creator of WireSock, a well-known high-speed WireGuard implementation for Windows.
Rather than creating a visible virtual network adapter like TUN or TAP, the PKF driver binds directly to your existing network adapters via a low-level NDIS-based driver, processing VPN traffic within the Windows networking stack itself.
Is my VPN traffic still encrypted if there is no VPN adapter showing?
Yes. Even without a visible network adapter, all your traffic is fully encrypted and securely tunneled through ExpressVPN’s servers using the new PKF driver. The encryption level and privacy protection remain uncompromised.
Why use the PFK driver?
Traditionally, virtual adapters like TUN or TAP route your encrypted traffic through a separate interface. However, this method can expose routing tables to potential attacks like TunnelCrack or TunnelVision.
The PKF driver bypasses this by processing VPN traffic more directly, resulting in better speeds and lower latency. It does not rely on Windows routing tables, protecting against certain advanced attack vectors while minimizing the risk of traffic leaks.
What about apps that require binding to a VPN adapter?
Some apps, like torrent clients, rely on “binding” to a specific VPN interface to ensure they only work when the VPN is active. To use this feature, disable Lightway Turbo. When Lightway Turbo is off, ExpressVPN uses the WinTUN driver, enabling you to bind applications to the VPN interface.
Once it’s off, you can bind apps by selecting the appropriate network interface in your app’s settings based on your chosen protocol:
- ExpressVPN Tunnel for Lightway – UDP and Lightway – TCP, and OpenVPN – TCP.
- OpenVPN Data Channel Offload for ExpressVPN for OpenVPN – UDP.
For advanced configurations or additional guidance, contact the ExpressVPN Support Team for immediate assistance.
What about the new Lightway Turbo feature?
Lightway Turbo benefits from the new PKF driver’s high performance. If you wish to enable Lightway Turbo, you must be using the Lightway – UDP VPN protocol, which leverages the PKF driver.
Why does ipleak.net show my ISP’s information when connected via Lightway – UDP?
ipleak.net may still detect your ISP’s DNS resolvers or IP metadata due to how certain tests interpret the Windows stack. However, your real IP address is not exposed, and all your traffic is securely routed through ExpressVPN. For peace of mind, you can also check for DNS leaks using multiple tools or switching temporarily to Lightway – TCP to compare results.
Is Lightway – TCP slower than Lightway – UDP with Lightway Turbo enabled?
Generally, Lightway – UDP with Turbo enabled offers the best performance due to the PKF driver. Lightway – TCP may have slightly higher latency or lower speeds depending on your network, but it’s still a fast and reliable option—especially for users who need traditional adapter functionality.
Need help? Contact the ExpressVPN Support Team for immediate assistance.