Windows gives VPN users capabilities that iOS and Android cannot match: true system-level kill switches, native WireGuard support in Windows 11, and more granular firewall control. Here is what to look for in a Windows VPN in 2026.
Why Windows VPNs Work Better Than Mobile
On iOS, a kill switch -- which blocks all traffic if the VPN drops -- is limited by Apple's network extension framework. On Windows, VPN apps can interface directly with the Windows Firewall (Windows Filtering Platform) to block all traffic at the OS level when the VPN drops. This is a true kill switch: no traffic leaks during reconnection, regardless of what is happening in the background. Enable the kill switch in your chosen VPN app settings. It is off by default in most apps but should be on whenever you are using the VPN for security-sensitive activities.
NordVPN for Windows: Best Overall
NordVPN's Windows client is among the most feature-rich available. It includes NordLynx (WireGuard implementation) for maximum speed, Threat Protection Pro (DNS-level blocking of ads, trackers, and malware across all Windows applications), split tunneling (route specific apps through the VPN and others directly), a kill switch, and a dark web monitor. The interface is clean and the connection is fast. NordVPN allows up to 10 simultaneous connections, making it practical for a household with multiple Windows machines. The Threat Protection Pro feature works system-wide, not just in the browser -- it blocks tracker requests made by Windows apps, which browser extensions cannot reach.
ExpressVPN for Windows: Fastest Connection
ExpressVPN's Lightway protocol consistently shows the lowest latency and highest throughput in independent speed tests on Windows. For users whose primary concern is speed -- streaming 4K, gaming over VPN, large file transfers -- Lightway on Windows is hard to beat. The Windows app includes split tunneling, a kill switch (called Network Lock), and an automatic connection on untrusted networks. The browser extension (available for Chrome, Firefox, Edge) gives one-click access without opening the full desktop app. Trade-off: fewer simultaneous connections than NordVPN (8 vs 10) and typically priced slightly higher.
Mullvad for Windows: Best for Privacy
Mullvad requires no email address, no name, and no personal information to create an account -- you pay with a random account number and can pay with cash or crypto if desired. The Windows app is open source and has been audited. WireGuard protocol by default, with OpenVPN available. Kill switch is enabled by default (not opt-in like most providers). No logging of any kind. Trade-off: Mullvad does not optimize for streaming -- Netflix US and BBC iPlayer work inconsistently. For users whose goal is privacy and anonymity rather than streaming access, Mullvad is the correct choice on Windows.
Split Tunneling: a Windows VPN Feature Worth Using
Split tunneling lets you route specific apps or websites through the VPN while others connect directly. Practical uses on Windows: keep your bank and employer VPN traffic outside the consumer VPN (banks sometimes block VPN IP ranges; your work VPN and consumer VPN may conflict); keep gaming traffic direct (lower latency) while browsing through the VPN; route only specific browsers through the VPN. NordVPN, ExpressVPN, and Surfshark all support split tunneling on Windows. Mullvad has limited split tunneling support. Enable it in the VPN app settings under the split tunneling or app exclusion section.
Performance Impact on Windows
With WireGuard or Lightway on a modern Windows machine, VPN overhead is minimal for most tasks. On a 1Gbps connection, expect 10-20% speed reduction. On typical residential connections (100-500 Mbps), the reduction is usually unnoticeable. Latency increases by 5-30ms to nearby servers. For streaming and browsing: no practical difference. For online gaming: latency increase matters -- connect to a server geographically close to both you and the game server, or temporarily disable the VPN for latency-sensitive games.