Help CenterConnection IssuesDNS leak — what it is and how to fix it
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DNS leak — what it is and how to fix it

3 min read·Updated May 25, 2026

Understand DNS leaks and verify HorizonVPN is protecting your DNS queries.

A DNS leak occurs when your DNS queries are sent through your ISP's servers instead of through the VPN tunnel, potentially revealing your browsing activity even while connected to a VPN.

How to test for DNS leaks

  1. 1Connect to HorizonVPN
  2. 2Visit dnsleaktest.com
  3. 3Click "Extended Test"
  4. 4All DNS servers shown should belong to HorizonVPN — not your ISP

If you see your ISP's DNS servers

  1. 1Go to Settings → DNS
  2. 2Ensure DNS Leak Protection is enabled
  3. 3Set DNS to "HorizonVPN DNS" (not system default)
  4. 4Disconnect and reconnect the VPN, then test again

HorizonVPN runs its own zero-log DNS servers. Your DNS queries never leave our encrypted network.

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