FAQ
TL;DR: Fix “DNS server not responding” by manually setting 2 DNS IPs (62.21.99.95 and 62.21.99.94); as the expert said, “Add DNS to the network card.” [Elektroda, jimasek, post #16807819]
Quick Facts
- Setup reported: INEA ISP with Technicolor CGA2121; error shown was “DNS server not responding.” [Elektroda, Willyff, post #16807650]
- Windows IP readout showed IPv4 192.168.0.12 and gateway 192.168.0.1. [Elektroda, Willyff, post #16807777]
- Manually suggested DNS servers: 62.21.99.95 (primary), 62.21.99.94 (secondary). [Elektroda, jimasek, post #16807819]
- Issue appeared on October 26 and cleared by October 31 without changes. [Elektroda, Willyff, post #16807777]
- Troubleshooter message: “device or resource (DNS server) is not responding.” [Elektroda, Willyff, post #16807916]
How do I fix “DNS server not responding” with INEA and a Technicolor CGA2121?
Set manual IPv4 DNS on your PC to 62.21.99.95 and 62.21.99.94. Reconnect and test several sites. If it still fails, contact your ISP to check upstream DNS or line issues. “Add DNS to the network card.” [Elektroda, jimasek, post #16807819]
Where do I set IPv4 DNS in Windows 10?
- Open Network & Internet > Change adapter options > your Ethernet/Wi‑Fi > Properties.
- Select Internet Protocol Version 4 (TCP/IPv4) > Properties.
- Choose “Use the following DNS server addresses,” enter 62.21.99.95 and 62.21.99.94, then OK and reconnect. [Elektroda, jimasek, post #16807819]
Does this DNS error affect both Ethernet and Wi‑Fi?
Yes. In the case discussed, Ethernet failed and the router’s Wi‑Fi also had no internet. That points to an upstream or DNS issue rather than a single port. [Elektroda, Willyff, post #16807777]
What does the ipconfig output tell me here?
The PC received IPv4 192.168.0.12 with subnet 255.255.255.0 and gateway 192.168.0.1. That suggests local DHCP worked, but name resolution or upstream connectivity failed. [Elektroda, Willyff, post #16807777]
Should I use IPv4 or IPv6 DNS for this setup?
Use IPv4 DNS. The configuration and addresses shown were IPv4, and the helper explicitly pointed this out during troubleshooting. [Elektroda, jimasek, post #16807895]
What if manual DNS still doesn’t work?
Escalate to your ISP. The expert’s guidance was clear: “Report the problem to your ISP.” Persistent failures after correct DNS entry indicate a provider or upstream fault. [Elektroda, jimasek, post #16807923]
Why did the internet start working again days later without changes?
The user reported failure on October 26 and normal service on October 31 after doing nothing. That pattern fits a transient provider issue or network maintenance. [Elektroda, Willyff, post #16807777]
Could swapping Ethernet cables cause this symptom?
The issue appeared after unplugging the original cable to test another. Restoring the original cable did not fix it, indicating the fault was not the cable alone. [Elektroda, Willyff, post #16807777]
What does “Media disconnected” for Ethernet 2 mean?
Windows detected a second adapter that wasn’t linked. That interface was inactive, so only the primary Ethernet was participating in troubleshooting. [Elektroda, Willyff, post #16807777]
Can I still post or get help without home internet?
Yes. In the thread, the user used a phone data package to access the forum and continue troubleshooting. [Elektroda, Willyff, post #16807735]
What is the Technicolor CGA2121 here?
It’s the cable modem model the user had connected with INEA service during the DNS error described. [Elektroda, Willyff, post #16807650]
What is a DNS error in this Windows case?
Windows reported, “This computer may be configured correctly, but the device or resource (DNS server) is not responding.” That indicates failed name resolution replies. [Elektroda, Willyff, post #16807916]
Which Windows 10 version appeared in the report?
The diagnostic output shows Microsoft Windows Version 10.0.15063. That build detail helps align settings with the steps above. [Elektroda, Willyff, post #16807777]
