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DNS_PROBE_FINISHED_NXDOMAIN: DNS Lookup Failed
4 min read
The DNS_PROBE_FINISHED_NXDOMAIN error occurs when a DNS (Domain Name System) lookup fails because the domain cannot be resolved to an IP address. This means your browser cannot find the server hosting the domain.
DNS_PROBE_FINISHED_NXDOMAIN — when the resolver returns "name does not exist".For the hosting-side variant of the same error, see DNS_PROBE_FINISHED_NXDOMAIN on Hosting: Causes and Solutions. For the related Linux-side resolver failure, Fix "EAI_NONAME" Error — Complete DNS Resolution Guide. For DNS-records background, What is DNS Server Hosting?
What Causes DNS Lookup Failure?
Incorrect DNS Records
The domain DNS records (e.g., A, CNAME) are missing or incorrectly configured.
Unregistered or Expired Domain
The domain name is not registered, or its registration has expired.
Incorrect Nameserver Configuration
The domain is not pointing to the correct DNS hosting provider via NS records.
Local DNS Cache Issues
Outdated or incorrect DNS information is cached on your computer or router.
Propagation Delay
Recent changes to DNS settings have not propagated globally.
Network or ISP Issues
Your internet service provider (ISP) or local network is unable to resolve the domain.
Firewall, VPN, or Proxy Blocking
A firewall, proxy, or VPN might block the DNS query.
DNS Service Down
The DNS server hosting the domain records is offline or misconfigured.
How to Fix DNS_PROBE_FINISHED_NXDOMAIN
Verify Domain Registration
- Use a WHOIS Lookup Tool to check if the domain is registered and active:
- WHOIS Lookup
Check DNS Records
- Log in to your DNS hosting provider and verify that DNS records are correctly configured:
- A Record: Maps the domain to the server IP address.
example.com IN A 192.168.1.1- CNAME Record: Alias subdomains to the main domain.
www.example.com IN CNAME example.com- Use online tools like:
Update Nameservers
- Ensure the domain is pointing to the correct nameservers provided by your hosting provider.
Steps:
- Log in to your domain registrar (e.g., GoDaddy, Namecheap).
- Update the nameservers (NS records):
ns1.hostingprovider.com
ns2.hostingprovider.com- Wait for DNS propagation (up to 48 hours).
Clear DNS Cache
Clearing DNS cache ensures your computer uses updated DNS records.
Windows:
- Open Command Prompt as Administrator.
- Run:
ipconfig /flushdnsmacOS:
- Open Terminal.
- Run:
sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponderLinux:
- Open Terminal.
- Restart the DNS service:
sudo systemctl restart systemd-resolvedChange DNS Server
- Use reliable public DNS servers like Google DNS or Cloudflare DNS.
Google DNS:
- Primary: 8.8.8.8
- Secondary: 8.8.4.4
Cloudflare DNS:
- Primary: 1.1.1.1
- Secondary: 1.0.0.1
Steps to Change DNS (Windows):
- Go to Control Panel > Network and Sharing Center > Change Adapter Settings.
- Right-click your active connection and select Properties.
- Select Internet Protocol Version 4 (TCP/IPv4) and click Properties.
- Enter the DNS server addresses above.
Restart Your Router
- Restart your router to refresh the network settings and resolve DNS issues.
Test on a Different Network
- Try accessing the domain on another network (e.g., mobile data) to rule out local network issues.
Disable VPN, Proxy, or Firewall
- Temporarily disable your VPN, proxy, or firewall to see if they are blocking DNS resolution.
Advanced Troubleshooting
Use nslookup
Run the nslookup command to test DNS resolution.
Example:
nslookup example.comOutput (Successful):
Server: dns.google
Address: 8.8.8.8
Name: example.com
Address: 192.168.1.1Output (Failure):
** server can't find example.com: NXDOMAINUse tracert
Check the route to the domain.
Example:
tracert example.comCheck DNS Propagation
- Use DNS Checker to verify if your domain DNS records are propagating globally.
Contact Your Hosting Provider
- If the issue persists, contact your hosting provider or DNS hosting provider to ensure their DNS servers are functioning correctly.
The DNS_PROBE_FINISHED_NXDOMAIN error is usually caused by DNS misconfigurations, local cache issues, or domain status problems. By following the steps above, you can identify and resolve the issue to ensure your domain resolves correctly.
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