A “DNS server not responding” error usually means your device can’t talk to the server that turns website names into IP addresses, so the internet feels “down” even if your connection is technically live. In most cases you can fix it with a handful of quick network resets, DNS changes, and security‑software checks on your computer, phone, or router.

Quick Scoop

  • Restart everything first : modem/router, then your PC/phone.
  • Try another device and another site to see if it’s just one machine or your whole network.
  • Flush DNS and renew IP on computers to clear bad cached data.
  • Switch to public DNS (Google 8.8.8.8, Cloudflare 1.1.1.1) if your ISP’s DNS is flaky.
  • Temporarily disable firewall/antivirus and VPN to rule out over‑protective filters.

1. Confirm the problem

Before deep fixes, check whether the issue is local to your device or more general.

  • Try loading several sites (for example, a search engine and a news site).
  • Test with another device on the same Wi‑Fi.
  • If everything is down on all devices, the router/ISP/DNS is the likely culprit.

If only one site fails but others work, the issue may be with that site’s DNS, not your network.

2. Easy resets that fix most cases

These simple steps resolve a large share of “DNS server not responding” errors.

  1. Restart your router/modem
    • Power it off, unplug for 30 seconds, plug in, wait 1–2 minutes, then test again.
 * If issues are frequent, consider a full factory reset following your router’s manual.
  1. Restart your computer or phone
    • Reboots clear temporary network glitches and stuck DNS queries.
  1. Try another browser
    • If the error appears only in one browser, update it and clear its cache.

These basics are worth trying first because they’re fast and low‑risk.

3. Flush DNS and renew IP (computers)

If the DNS cache on your device is corrupted, you can see “DNS server not responding” even when everything else is fine.

On Windows (conceptual steps)

  • Open the command‑line tool as administrator.
  • Run a sequence of commands to:
    • Clear DNS cache (flush).
    • Release your IP address.
    • Renew your IP from the router.
    • Reset the Winsock catalog (network stack).

This sequence forces Windows to forget any bad DNS entries and rebuild its network configuration.

On macOS

  • Use the Terminal to run the system’s DNS flush command.
  • Then turn Wi‑Fi off and on or reboot to get a fresh network lease.

After flushing DNS, test the same sites again.

4. Change your DNS servers

If your ISP’s DNS is slow or down, pointing your device or router to a public DNS often fixes the error quickly.

Common public DNS options include:

ProviderPrimary DNSSecondary DNS
Google Public DNS8.8.8.88.8.4.4
Cloudflare1.1.1.11.0.0.1
OpenDNS (Cisco)208.67.222.222208.67.220.220
[10][1][3] **On Windows/macOS (general idea)**
  • Open your network adapter’s properties.
  • Edit IPv4 DNS settings and enter the public DNS IPs manually.
  • Apply and restart your connection or reboot the machine.

On Android 12+ and iPhone

  • Android: set a Private DNS provider hostname such as 1.1.1.1, then save.
  • iPhone: under Wi‑Fi → Configure DNS → Manual, add 1.1.1.1 (and a backup), then save.

You can also set these DNS servers on the router so all devices use them automatically.

5. Check firewalls, VPNs, and extra network adapters

Security tools and extra network layers sometimes block DNS traffic.

  • Temporarily turn off third‑party antivirus and firewall software to see if the error disappears.
  • Disable VPNs or proxy services; some misroute DNS queries or block them entirely.
  • On desktops, disable unused network connections in your network settings so your system uses the correct active adapter.

If DNS works with a firewall or VPN disabled, re‑enable it and adjust its settings, or switch tools.

6. Update or reset network drivers (PCs)

On Windows, outdated or corrupt network drivers can cause DNS failures that look like server issues.

  • Use Device Manager (or your OS’s equivalent) to update your network adapter drivers to the latest version.
  • If updating does not help, uninstall the adapter and let the OS reinstall the driver after a reboot.

Frequent DNS errors after driver changes or OS upgrades are a hint that this step might be necessary.

7. When the issue is outside your control

Sometimes the problem is upstream, not on your device.

  • If all troubleshooting fails but mobile data (on a phone) reaches the same sites fine, your ISP’s DNS or routing may be at fault.
  • If only one specific website fails across multiple networks, the site’s own DNS records or hosting provider are probably having an outage.

In these cases, you may need to wait for the ISP or site owner to resolve things, while temporarily using alternative DNS or connections where possible.

Quick story‑style wrap and TL;DR

Imagine a day where every time you ask someone for an address, they shrug and say, “Never heard of it.” That’s what your device goes through during a DNS server error: the roads (internet) are open, but the “address book” is broken. By restarting your gear, clearing cached directions, and switching to a more reliable address book like Google or Cloudflare DNS, you usually get back to smooth browsing in minutes.

TL;DR steps:

  1. Restart router and device.
  2. Flush DNS and renew IP.
  3. Switch to public DNS (8.8.8.8 / 1.1.1.1).
  4. Temporarily disable firewall/VPN and unused adapters.
  5. Update network drivers; if all else fails, suspect ISP or website DNS.

Information gathered from public forums or data available on the internet and portrayed here.