Solutions to DNS server not responding include: 1. Check the network connection and restart the router or computer; 2. Replace it with Google public DNS (8.8.8.8 and 8.8.4.4); 3. Clear the DNS cache and reset the network protocol; 4. Update the network card driver or temporarily disable the security software. In most cases, network access can be restored by changing DNS or refreshing the cache.

DNS server not responding is one of the common problems for Windows 10 users when using the network, usually manifested as failure to open a web page, prompting "The server is not responding", or "no Internet access". This problem does not necessarily mean that your network is completely disconnected, but that there is a problem with the communication between the computer and the DNS server. The solution is actually not complicated. The following is to start from several common directions to help you quickly investigate.

Check basic connections and restart the device

Many times the problem is not complicated, start with the simplest:

• Confirm that the network connection is normal : Check whether it is connected to Wi-Fi or wired network, and whether other devices can access the Internet normally.
• Restarting the router and computer : Sometimes restarting is the most direct and effective way, especially when the router may have abnormalities after running for a long time.
• Try changing a network cable : If it is a wired connection, poor network cable contact may also lead to such problems.

If it's just a problem with your computer and other devices are normal, then the problem is most likely due to the local settings.

Change DNS settings to public DNS

Windows uses DNS servers provided by the carrier by default, but these servers may be unstable or blocked. Manually changing to a more stable public DNS can solve the problem.

The operation steps are as follows:

• Open Control Panel > Network and Sharing Center > Click the currently connected network (such as WLAN or Ethernet) > Properties > Double-click Internet Protocol Version 4 (TCP/IPv4).
• Select "Use the DNS server address below" in the pop-up window.
• Fill in the preferred DNS to 8.8.8.8 and the alternate DNS to 8.8.4.4 (this is Google's public DNS).
• Click OK to save and restart the network connection.

You can also use 1.1.1.1 provided by Cloudflare or 223.5.5.5 of Alibaba Cloud, with similar effects.

Clear DNS cache and reset network settings

The system caches the wrong DNS record, which can also cause problems. The cache can be cleared through the command prompt:

• Open a command prompt (run as an administrator), and then enter the following commands:
  • ipconfig /flushdns
  • ipconfig /release
  • ipconfig /renew
  • netsh winsock reset
  • netsh int ip reset

These commands clear the local DNS cache, release and reacquire the IP address, and reset some network protocols. After completion, restart the computer to see if it returns to normal.

Update or disable firewall/antivirus software

Some security software restricts network access and even intercepts normal DNS requests by mistake. You can try:

• Temporarily close the firewall or third-party antivirus software to see if the problem disappears.
• If it is an enterprise or school network, it may be a policy limitation, try switching to home network testing.
• Update the network card driver: Go to "Device Manager" > "Network Adapter", right-click your network card > Update the driver.

Some users have reported that security software such as Norton and Kaspersky will cause this problem, and the problem will be automatically resolved after uninstalling.

Basically, these common inspection methods are just the ones. When encountering DNS server not responding, don’t panic. In most cases, you can do it by changing DNS or refreshing the cache. If you encounter this problem frequently, it is recommended to use public DNS for a long time to avoid relying on unstable default services.

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