Fix "DNS_PROBE_FINISHED_NXDOMAIN"

This error means your computer asked DNS for the domain and got "no such domain" (NXDOMAIN). It's either your DNS cache/settings, or the domain's records. Here is how to tell and fix it.

Is it just you, or everyone?

Check the domain from another network/device or an online DNS tool. If it works elsewhere, it's your machine; if it fails everywhere, it's the domain's DNS.

Fix it on your side

Flush your DNS cache and try a public resolver (1.1.1.1 / 8.8.8.8):

# Windows
ipconfig /flushdns
# macOS
sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponder
# Linux
sudo systemd-resolve --flush-caches

Fix it on the domain side

• The domain has no A record — add one pointing to your server. See pointing a domain (A record).
• The domain expired or its nameservers are wrong — check the registrar.
• A recent DNS change hasn't propagated yet — give it time.

NXDOMAIN = the name didn't resolve. Flush your DNS and try 1.1.1.1; if it fails everywhere, fix the domain's A record/nameservers.

Cause: DNSSEC misconfiguration

If DNSSEC is enabled at the registrar but the DS records don't match what the nameservers actually sign, validating resolvers reject the domain outright, which can also show as NXDOMAIN-like failures. If you recently touched DNSSEC settings, that's a strong suspect; disabling it temporarily helps isolate the cause.

Cause: a typo or a missing subdomain record

A single-letter typo, or trying to reach a subdomain (like shop.example.com) that has no record of its own, produces this exact error even though the base domain is fine. Double-check the exact hostname, and add a record for the subdomain if one is missing.

How to prevent NXDOMAIN issues

• Renew domains well before expiry, ideally with auto-renew on.
• Keep nameservers and DNS records documented somewhere outside the registrar, in case of account issues.
• Avoid touching DNSSEC unless you're confident in the DS record chain.
• Use a monitoring tool that alerts on DNS resolution failures, not just HTTP downtime.

Related errors

If the domain resolves but the connection then stalls, that's a different problem — see ERR_CONNECTION_TIMED_OUT. If SSL is the issue once the domain does resolve, see SSL / Let's Encrypt renewal. Picking a new host and need DNS set up? See how to choose a web hosting provider.