how to fix 'the dns server isn't responding' on a win pc
Jul 30, 2025 am 03:30 AMFirst, solve the problem of "DNS server not responding" by refreshing the DNS cache and resetting network settings: 1. Run the command prompt as an administrator; 2. Enter and execute the following commands in turn: ipconfig /flushdns, ipconfig /release, ipconfig /renew, netsh winsock reset, netsh int ip reset. After completion, restart the computer. The network settings will restore the default and clear the corrupt DNS cache, thereby solving most DNS connection problems.
The "DNS server isn't responding" error on a Windows PC usually means your computer can't communicate with the Domain Name System (DNS) server to load websites. While your internet might be working, you can't reach sites by name. Here's how to fix it quickly and effectively.

1. Restart Your Router and Computer
Before diving into technical fixes, try the basics:
- Turn off your PC and your router/modem.
- Wait 30 seconds, then power on the router and wait for it to fully reconnect.
- Restart your computer.
This often resolves temporary network glitches, including DNS communication issues.

2. Flush DNS and Reset Network Settings
Windows stores DNS info locally. Corrupted cache or misconfigured settings can cause the error.
Open Command Prompt as Administrator (search for cmd
, right-click > Run as administrator), then run these commands one at a time:

ipconfig /flushdns ipconfig /release ipconfig /renew netsh winsock reset netsh int ip reset
After running all commands, restart your PC .
This clears outdated DNS entries and resets TCP/IP stack and Winsock settings, which are common culprits.
3. Change to a Public DNS Server
Your ISP's DNS server might be down or slow. Switching to a reliable public DNS like Google DNS or Cloudflare often fixes the issue.
Steps:
- Press
Win I
→ Go to Network & Internet → Wi-Fi or Ethernet (dependent on connection). - Click your network → Hardware properties → Scroll to DNS server assignment → Click Edit .
- Choose Manual (not Automatic).
- Toggle IPv4 on and enter:
- Preferred DNS :
8.8.8.8
- Alternate DNS :
8.8.4.4
(These are Google's DNS servers. You can also use Cloudflare:1.1.1.1
and1.0.0.1
)
- Preferred DNS :
- Save and test your connection.
This bypasses your ISP's unreliable DNS and often restores browsing instantly.
4. Disable IPv6 (Temporarily)
Sometimes IPv6 settings interfere with DNS, especially if your network doesn't fully support it.
How to disable:
- Go to Network & Internet Settings → Change adapter options .
- Right-click your active network → Properties .
- Uncheck Internet Protocol Version 6 (TCP/IPv6) .
- Click OK and restart your browser.
Test the connection. If it works, the issue was IPv6-related. You can re-enable it later if needed.
5. Update or Reinstall Network Driver
Outdated or corrupted network drivers can prevent proper DNS communication.
Update driver:
- Press
Win X
→ Device Manager . - Expand Network adapters .
- Right-click your network adapter → Update driver → Search automatically.
If that doesn't help, try:
- Uninstalling the driver (right-click → Uninstall device), then restart your PC. Windows will reinstall it automatically.
6. Temporarily Disable Firewall or Antivirus
Overly aggressive security software can block DNS requests.
- Turn off third-party antivirus/firewall (eg, Norton, McAfee) temporarily.
- Test your internet.
If the error disappears, adjust the firewall settings or consider switching to a less intrusive security tool.
Don't leave your system unprotected—only disable for testing.
Final Notes
Most "DNS server isn't responding" issues are resolved by flushing DNS switching to Google DNS . If the problem persists across multiple devices, the issue might be your router or ISP—try resetting the router to factory settings or contacting your provider.
Basically, start simple, then work up to network settings and drivers. It's usually not as complex as it seems.
The above is the detailed content of how to fix 'the dns server isn't responding' on a win pc. For more information, please follow other related articles on the PHP Chinese website!

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