**Step 1: Troubleshooting DNS Server Not Responding Issues**

The Domain Name System (DNS) is a critical component of the internet, as it translates domain names into IP addresses, enabling devices to communicate with each other. When the DNS server is not responding, it can lead to various connectivity issues, including website inaccessibility, email problems, and more. Troubleshooting these issues requires a systematic approach to identify the root cause and implement effective solutions.

1. Verify Internet Connectivity:

Before troubleshooting the DNS server, ensure that your device has a stable internet connection. Check if other devices on the same network can access the internet. If no other devices can connect, the problem may lie with your internet service provider (ISP).

2. Restart the Router and Modem:

A simple yet often effective solution is to restart your router and modem. This helps clear any temporary glitches or errors that may have caused the DNS issue. Unplug both devices for 30 seconds, then plug them back in and wait for them to restart completely.

3. Flush the DNS Cache:

The DNS cache stores recently resolved domain name-to-IP address mappings to improve browsing speed. However, this cache can sometimes become corrupted or outdated, leading to DNS errors. Flushing the DNS cache can resolve these issues. On Windows, open the command prompt (cmd) and type "ipconfig /flushdns." On macOS, use the Terminal (Terminal.app) and type "sudo dscacheutil -flushcache."

4. Check DNS Server Settings:

Incorrect DNS server settings can also cause DNS issues. Check the DNS server settings configured on your device. The optimal settings vary depending on your network and ISP. You can usually find the DNS server settings under the network configuration or advanced settings in your device's settings menu. If you're unsure of the correct DNS server addresses to use, contact your ISP.

5. Use Public DNS Servers:

If the default DNS servers provided by your ISP are causing issues, consider using public DNS servers provided by reputable organizations like Google and Cloudflare. These servers often provide faster and more reliable DNS resolution. To use public DNS servers, change the DNS server addresses in your device's network settings to:

- Google DNS: 8.8.8.8 and 8.8.4.4
- Cloudflare DNS: 1.1.1.1 and 1.0.0.1

6. Disable IPv6:

IPv6 is the latest version of the internet protocol, but it can sometimes conflict with DNS resolution. If you're having DNS issues, try disabling IPv6 in your device's network settings and see if that resolves the problem.

7. Update Network Drivers:

Outdated network drivers can cause various connectivity issues, including DNS problems. Check for any available driver updates for your network adapter and install them. You can usually find driver updates on the manufacturer's website or through Windows Update (if you're using a Windows device).

8. Contact Your ISP:

If none of the above solutions resolve the DNS server not responding issue, contact your ISP. They have the necessary tools and expertise to diagnose and fix network-wide DNS problems.

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Method 2: Configure the TCP/IP settingsSelect Start > Control Panel.Select View network status and tasks under Networking and Internet.Select Change adapter settings.Press and hold (or right-click) Local Area Connection, and then select Properties.Select Internet Protocol Version 6 (TCP/IPv6) > Properties.More items...read more >>