How to deal with the DNS server not responding? A practical guide to quickly restoring your network

in the process of daily Internet access, many people have encountered webpage loading cards, social software can not connect or even completely disconnected from the network. After investigation, it is often found that the DNS server is not responding. DNS is the core bridge between domain name and Internet Protocol Address conversion. Once there is an unresponsive problem, it will cut off the connection channel between the device and network resources. This article will go from the basic row to the advanced repair, and explain in detail the practical methods to solve the unresponsive DNS server to help you quickly restore the normal network experience.

, DNS server does not respond to what basic investigation?

faced with the problem that the DNS server does not respond, first check from the most basic hardware and network environment, which can quickly eliminate most simple faults and avoid blind complex operations.

1, check the network hardware connection status

first check whether the indicator light of the router, light cat and other network equipment is normal. If the red light flashes or goes out, it may be a hardware failure or a loose line. You can try to re-plug the network cable between the light cat and the router, as well as the connection network cable between the router and the device, to ensure that the interface is plugged tightly without loosening; at the same time check the optical fiber interface of the light cat to confirm that the bending angle of the optical fiber is too large or damaged.

2, restart network devices and end point devices

network devices running for a long time may cause cache accumulation, causing the problem that the DNS server does not respond. You can turn off the power of the light cat and the router first, wait 30 seconds, then restart the light cat and the router in turn, and finally restart your computer or mobile phone and other end point devices. The restart operation can clear the device cache and reset the network connection. Many minor DNS failures can be solved by this step.

2, DNS server does not respond How to switch public DNS address?

if the problem of DNS server not responding after the basic troubleshooting is still not solved, it is likely that the DNS address currently in use is faulty, and switching to a stable public DNS address at this time is an effective solution.

1, Windows system switch DNS address

open the control panel of the computer, find "Network and Sharing Center", click "Change Adapter Settings" on the left, right-click on the currently used network connection and select "Properties", find "Internet Protocol Version 4 (TCP/IPv4) " in the pop-up window and double-click to open, select "Use the following DNS server address", enter the public DNS address, such as the commonly used 114.114.114.114 in China, or Google's 8.8.8.8, click OK to save the settings after completion.

2, mobile end switch DNS address

for mobile phone users, take the Android system as an example, open the WLAN option in the settings, find the currently connected wireless network, long press the network name and select "Modify Network", tick "Show Advanced Options", change the IP setting to "Static", then enter the public DNS address in DNS1 and DNS2, save and reconnect to the network; Apple phones need to click the exclamation mark after the network name in the WLAN settings, select "Configure DNS", switch to "Manual" and add the public DNS address.

What are the advanced repair methods for DNS server not responding?

if the basic troubleshooting and switching of DNS addresses cannot solve the problem that the DNS server does not respond, it is necessary to carry out advanced network setting repair to deal with network failures at the system level.

1, Reset network protocol and DNS cache

Windows system can reset the network protocol through the command prompt, press the Win + R key to open the run window, enter cmd to open the command prompt, enter the "netsh winsock reset" and "netsh int ip reset" commands in turn, and restart the computer after the execution is completed. At the same time, you can also enter the "ipconfig /flushdns" command to clear the local DNS cache to avoid the problem that the cached wrong DNS records cause the DNS server to not respond.

2, check the computer firewall and antivirus software

the security settings of some firewalls or antivirus software are too strict, it may intercept DNS requests and cause the DNS server to not respond. You can try to temporarily turn off the firewall and antivirus software of the computer, and then re-test the network connection. If the network returns to normal, it means that it is caused by the interception of the security software. At this time, you can add DNS-related trust rules to the security software, or adjust the security protection level to avoid similar problems in the future.

sum up, to solve the problem of DNS server not responding, follow the troubleshooting logic from basic to advanced, first check the hardware connection and restart the device, then try to switch the public DNS address, and finally perform network protocol reset and security software troubleshooting. These methods cover most DNS server failure scenarios, follow the steps to efficiently locate and solve the problem, help you quickly restore a stable network connection, return to normal Internet experience.