Encountering the 'DNS Server Not Responding' error is one of the most common and frustrating networking issues. This error indicates that your browser cannot establish a connection to the internet because the Domain Name System (DNS)—the service that translates website names into IP addresses—is failing to communicate. Whether you are on Windows 10 or 11, this guide provides a step-by-step protocol to resolve the issue.

1. Perform a Hard Reboot of Your Networking Hardware

Before changing any software configurations, perform a power cycle on your hardware. This clears the router's internal cache and resets the connection with your ISP.

• Unplug the power cable from your router and modem.
• Wait for at least 30 seconds to allow the capacitors to discharge.
• Plug the modem back in first, followed by the router.
• Wait for the connection lights to stabilize and try browsing again.

2. Flush the DNS Cache and Reset IP Settings

Over time, the DNS resolver cache on your computer can become corrupted, leading to connection timeouts. You can clear this using the Windows Command Prompt:

• Type cmd in the Windows search bar, right-click the result, and select Run as Administrator.
• Inside the window, type the following commands one by one, pressing Enter after each:
• ipconfig /flushdns
• ipconfig /registerdns
• ipconfig /release
• ipconfig /renew
• netsh winsock reset
• Restart your computer to finalize the network stack reset.

3. Change Your DNS Server Manually

If your ISP's default DNS servers are down or unstable, switching to a reliable third-party provider like Google Public DNS or Cloudflare can fix the problem immediately.

• Open the Control Panel and navigate to Network and Sharing Center.
• Click on Change adapter settings in the left sidebar.
• Right-click your active connection (Wi-Fi or Ethernet) and select Properties.
• Highlight Internet Protocol Version 4 (TCP/IPv4) and click the Properties button.
• Select 'Use the following DNS server addresses' and enter:
• Preferred DNS: 8.8.8.8
• Alternate DNS: 8.8.4.4
• Check the box for 'Validate settings upon exit' and click OK.

4. Disable IPv6 (Internet Protocol Version 6)

While IPv6 is the modern standard, some older routers and ISPs still struggle with its implementation, causing DNS hang-ups. Disabling it can often restore the IPv4 pathway.

• Go back to the Change adapter settings window.
• Right-click your connection and select Properties.
• Locate Internet Protocol Version 6 (TCP/IPv6) in the list and uncheck the box.
• Click OK and restart your web browser.

5. Update Your Network Adapter Drivers

An outdated network driver can cause intermittent DNS failures. To ensure your hardware is communicating correctly with Windows:

• Right-click the Start button and select Device Manager.
• Expand the Network adapters section.
• Right-click your Wi-Fi or Ethernet controller and select Update driver.
• Choose 'Search automatically for drivers'. If Windows finds an update, follow the prompts to install it and reboot your PC.

6. Disable Your Third-Party Antivirus or Firewall

Occasionally, overzealous security software can block DNS requests, misidentifying them as malicious activity. Temporarily disable your third-party antivirus (such as Avast, McAfee, or Norton) and see if the connection returns. If it does, you may need to reset the software's firewall rules or switch to Windows Defender.

💡 Pro Tip: Keep your software updated to avoid these issues in the future.