If you're experiencing a "DNS server not responding" error on your Windows or Mac device, it can be frustrating and disrupt your internet usage. This error typically occurs when your computer is unable to connect to the DNS (Domain Name System) servers configured for your network, preventing it from translating website addresses into IP addresses. Follow these steps to troubleshoot and resolve this issue.

Step-by-Step Guide to Fixing DNS Server Not Responding

1. Restart Your Router

Sometimes, simply restarting your router can resolve connectivity issues, including DNS problems.

  1. Unplug the power cord from your router and modem (if separate).
  2. Wait for about 60 seconds.
  3. Plug them back in and wait until all lights are stable, indicating that they have restarted completely.

2. Flush DNS Cache

Flushing the DNS cache can help if your computer is using outdated or corrupted DNS records.

  • Windows:
    1. Open Command Prompt as Administrator (search for "cmd", right-click, and select "Run as administrator").
    2. Type the following command and press Enter: ipconfig /flushdns
  • Mac:
    1. Open Terminal (you can find it in Applications > Utilities).
    2. Type the following command and press Enter: 
      sudo killall -HUP mDNSResponder

3. Change DNS Servers to Public DNS

Switching to public DNS servers like Cloudflare (1.1.1.1) or Google (8.8.8.8) can often bypass issues with your ISP's DNS servers.

  • Windows:
    1. Open Network & Internet settings by searching for it in the Start menu.
    2. Select "Status", then click on "Change adapter options" on the left.
    3. Right-click your active network connection and select "Properties".
    4. Double-click "Internet Protocol Version 4 (TCP/IPv4)" or "Internet Protocol Version 6 (TCP/IPv6)".
    5. Select "Use the following DNS server addresses" and enter the preferred and alternate DNS servers.
  • Mac:
    1. Open System Preferences, then click on "Network".
    2. Select your active network connection from the sidebar and click "Advanced".
    3. Go to the "DNS" tab and click the "+" button to add new DNS servers (e.g., 1.1.1.1).

4. Check Network Adapter Settings

Ensure that your network adapter settings are configured correctly.

  1. Open the Control Panel on Windows or System Preferences on Mac.
  2. Navigate to "Network and Sharing Center" (Windows) or "Network" (Mac).
  3. Check that your network adapter is enabled and properly configured.

5. Run Network Diagnostics

Use built-in tools to diagnose and fix network issues.

  • Windows:
    1. In the "Network and Sharing Center", click on "Change adapter settings".
    2. Right-click your active connection and select "Status".
    3. Click "Diagnose" to run network diagnostics.
  • Mac:
    1. In the Network settings, click on the gear icon and select "Open Network Preferences".
    2. Select your active connection and click "Advanced".
    3. Go to the "TCP/IP" tab and click "Renew DHCP Lease" or "Configure IPv4" to ensure it's set correctly.

Troubleshooting Tips

If you've tried all the steps above and are still experiencing issues:

  • Check if other devices on your network can access the internet to determine if it's a device-specific problem.
  • Contact your ISP for assistance, as there may be an issue with their DNS servers or service.

By following these steps, you should be able to resolve most "DNS server not responding" issues on your Windows or Mac device. If problems persist, consider reaching out to Internetport support for further assistance.