How do I fix a DNS server not responding error?

1. Verify the DNS server and network settings in the TCP/IP properties.
2. Run the Windows Network Diagnostic Troubleshooter.
3. Reauthorize the DNS server on the network.
4. Restart the DNS cache service.
5. Disable malware and virus protection software.
6. Check your DNS server for accuracy.
7. Check the host file for accuracy.
8. Reset your router.