Understanding the Error

"DNS server not responding" means your computer can't reach the DNS server to translate domain names to IP addresses. No DNS = no internet browsing.

Quick Fix #1: Flush DNS Cache

Open Command Prompt as Administrator:

ipconfig /flushdns
ipconfig /registerdns
ipconfig /release
ipconfig /renew

Quick Fix #2: Change DNS Servers

Switch to public DNS servers:

  1. Control Panel ? Network and Sharing Center
  2. Click your connection ? Properties
  3. Select "Internet Protocol Version 4 (TCP/IPv4)" ? Properties
  4. Select "Use the following DNS server addresses"
  5. Enter: 8.8.8.8 and 8.8.4.4 (Google DNS)
  6. Click OK

Quick Fix #3: Restart DNS Client Service

net stop dnscache
net start dnscache

Check DNS Server Status

Test if DNS server is reachable:

nslookup google.com
ping 8.8.8.8

Advanced: Check Network Adapter Settings

netsh interface ip show config

Router Issues

If multiple devices have DNS problems:

  • Restart your router/modem
  • Update router firmware
  • Check router DNS settings
  • Contact your ISP

Firewall Blocking DNS?

Temporarily disable Windows Firewall to test. If DNS works, create firewall rule to allow DNS (port 53).

Prevention

  • Use multiple DNS servers (primary and secondary)
  • Monitor DNS server health on your network
  • Keep network drivers updated
  • Document DNS settings for quick recovery