DNS Leak Checker

How to Fix DNS Leaks on Windows

Windows is one of the most common platforms for DNS leaks, especially when using third-party VPNs. Check your status with our DNS Leak Checker, then follow these steps.

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Step 1: Change Your DNS Servers

Open Settings → Network & Internet → Advanced network settings → Change adapter options. Right-click your active connection → Properties → Internet Protocol Version 4 → set DNS to:

Step 2: Flush Your DNS Cache

Open Command Prompt as Administrator and run:

ipconfig /flushdns

Step 3: Disable Smart Multi-Homed Name Resolution

Windows can send DNS queries over all network adapters simultaneously. Disable this in Group Policy Editor: Computer Configuration → Administrative Templates → Network → DNS Client → Turn off smart multi-homed name resolution → Enabled.

Step 4: Use NordVPN

The easiest solution is NordVPN. Its Windows app has built-in DNS leak protection and a kill switch that blocks all traffic if the VPN drops — no manual configuration needed.

Step 5: Test Again

Run our DNS Leak Checker to confirm your Windows machine is no longer leaking DNS.

Stop leaks for good

A VPN with private DNS on every server, a kill switch and WebRTC protection closes every leak this site tests for.

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