How to Fix "DNS Server Not Responding" Error in Windows – Step by Step Guide

How to Fix "DNS Server Not Responding" Error in Windows

Take a look at this guide I’ve created in case the DNS is not responding. I also compiled some online tools that could help make fixing it easier.”

The "DNS Server Not Responding" error is one of the most common connection problems on Windows. It can appear even when your internet seems to be working, preventing websites from loading properly.

In this guide, I’ll explain why this error happens and how to fix it step by step using safe and effective methods.

What Does "DNS Server Not Responding" Mean?

DNS (Domain Name System) works like the internet’s phonebook. It translates website names into IP addresses. If DNS fails, your browser cannot reach websites, even if your internet connection is active.

Common signs of this error include:

• Websites not loading
• "This site can't be reached" messages
• Internet works on other devices but not on your computer

Main Causes of the Error

• Incorrect DNS configuration
• Router or modem issues
• Firewall or antivirus blocking DNS requests
• ISP DNS server temporarily down
• Corrupted network cache

Solution 1: Restart Your Router and PC

Sometimes the fastest fix is simply restarting your devices:

1. Turn off your router
2. Wait 30 seconds
3. Turn it back on
4. Restart your computer

This simple step fixes the issue in many cases.

Solution 2: Change DNS Servers

Switching to a public DNS like Google or Cloudflare can solve the problem:

1. Press Win + R and type ncpa.cpl
2. Right-click your network → Properties
3. Double-click Internet Protocol Version 4 (IPv4)
4. Select Use the following DNS server addresses
5. Enter:
   Preferred DNS: 8.8.8.8
   Alternate DNS: 8.8.4.4
6. Click OK and restart your computer

Solution 3: Flush the DNS Cache

Flushing the DNS cache can remove corrupted data:

1. Press Win + S → type cmd
2. Right-click Command Prompt → Run as Administrator
3. Type the command: ipconfig /flushdns and press Enter
4. Restart your browser

Solution 4: Disable Antivirus or Firewall Temporarily

Sometimes security software can block DNS requests:

• Temporarily disable your antivirus
• Check if the internet works
• If it works, add your browser as an exception

Important: Do not leave protection disabled permanently.

Solution 5: Update Network Drivers

1. Press Win + X → Device Manager
2. Expand Network adapters
3. Right-click your adapter → Update driver
4. Select Search automatically for drivers

When the Problem Is With Your Internet Provider

If none of the above works:

• Test the internet on another device
• Contact your ISP to check for DNS issues
• Using a public DNS often avoids these problems

Tips to Prevent the Error in the Future

• Keep your DNS set to Google or Cloudflare
• Avoid using untrusted VPNs or proxy tools
• Do not install unknown browser extensions
• Restart your router monthly

Final Thoughts

The "DNS Server Not Responding" error is annoying, but it’s usually easy to fix. Changing your DNS server or flushing your cache solves the issue in most cases.

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Online Tools to Diagnose and Fix "DNS Server Not Responding" Errors

Using online DNS diagnostic tools can help you quickly identify whether the problem is related to your DNS provider, network configuration, or global DNS propagation.

Free DNS Diagnostic Tools

Google Public DNS Checker
https://dns.google/
Test domain resolution using Google Public DNS to verify if DNS servers are responding correctly.

MXToolbox – DNS Lookup
https://mxtoolbox.com/DNSLookup.aspx
Analyze DNS records such as A, MX, NS, and CNAME to detect configuration or resolution issues.

WhatsMyDNS – DNS Propagation Checker
https://www.whatsmydns.net/
Check DNS propagation status worldwide and identify locations where DNS servers are not responding.

Ping.eu – Network Diagnostic Tools
https://ping.eu/
Perform online ping, traceroute, and DNS lookups to troubleshoot connectivity problems.

DNSPerf – DNS Performance Comparison
https://www.dnsperf.com/
Compare the speed, latency, and reliability of popular public DNS providers.

Paid DNS Monitoring and Professional Tools

Site24x7 – DNS Monitoring
https://www.site24x7.com/dns-monitoring.html
Monitor DNS resolution in real time with global checkpoints, alerts, and detailed reports.

Pingdom – DNS and Uptime Monitoring
https://www.pingdom.com/
Track DNS response time and receive alerts when DNS issues affect website availability.

Uptrends – DNS Health Check
https://www.uptrends.com/tools/dns-check
Professional DNS diagnostics with historical performance data and global monitoring locations.

Catchpoint – Enterprise DNS Monitoring
https://www.catchpoint.com/solutions/dns-monitoring
Enterprise-level DNS monitoring focused on performance, availability, and root cause analysis.

Additional Tools to Rule Out Connectivity Issues

Before making DNS changes, it is important to confirm that the issue is not caused by an unstable internet connection or domain-related problems.

Free Internet and Domain Verification Tools

Speedtest by Ookla
https://www.speedtest.net/
Check your internet speed and stability to rule out connection-related DNS errors.

Domain WHOIS Lookup
https://whois.domaintools.com/
Verify domain status, ownership, and expiration details when a domain fails to resolve.

Advanced SEO and Technical Audit Tools

SEMrush – Site Audit
https://www.semrush.com/
Identify DNS, hosting, and server issues as part of a complete technical SEO audit.

Ahrefs – Site Audit
https://ahrefs.com/
Analyze DNS-related infrastructure problems that may affect crawling, indexing, and rankings.

Why These DNS Tools Are Useful

• Help determine whether the DNS problem is local or global
• Allow testing of alternative DNS providers
• Detect slow or unresponsive DNS servers
• Confirm correct DNS propagation after changes
• Support long-term DNS monitoring and stability