What should I do about DNS errors? DNS error causes and handling methods

in the process of daily use of the network, many users will encounter page loading failure, unable to access the designated website, of which DNS error is one of the more common incentives. This problem may seem small trouble, but it will directly affect office efficiency, entertainment experience and even important information acquisition. This article will deeply dismantle the various incentives of DNS errors, from the basic row to the targeted repair, to provide users with a complete set of solutions to help you quickly get rid of the dilemma of blocked network access.

What conditions cause DNS errors?

want to solve DNS errors efficiently, we must first clarify the root cause of the problem, DNS errors in different scenarios, inducing obvious differences in the reasons.

1, the domain name server itself failure

when the public DNS server used by the user encounters traffic overload, hardware failure or system maintenance, DNS errors will occur. For example, the operator DNS server in some areas may get stuck in the card due to excessive access during peak hours and cannot resolve the domain name entered by the user normally, resulting in the webpage cannot be loaded.

2, local network configuration abnormality

the local DNS configuration error of the user's device is also a common cause, such as manually entering the wrong DNS server address, or the failure of the DNS address automatically obtained by the device, will cause DNS errors. In addition, the network adapter driver of the computer or mobile phone is damaged, which may also affect the normal operation of the DNS resolution function.

What are the basic troubleshooting steps for DNS errors?

encounter DNS errors, start from the most basic link to troubleshoot, can quickly narrow the scope of the problem, to avoid invalid operations.

1, restart network devices and end point

many temporary DNS errors are caused by the network device cache abnormality, restart the router, light cat and other devices, while restarting your computer or mobile phone, can clear the temporary cache data in the device, the probability of solving the DNS error caused by the short card. Wait about 30 seconds after restart and then reconnect to the network to test website access.

2 Switch network environment test

If there is a DNS error in the current WiFi environment, you can try to switch to a mobile phone hotspot or other WiFi network. If you can access the website normally after switching, it means that the problem is on the DNS configuration or server of the original network; if there is still a DNS error after switching, It may be that there is a problem with the configuration or system of the end point device.

How to fix DNS errors?

after completing the basic investigation, the corresponding repair methods are adopted for the located problems, which can completely solve the DNS errors.

1, reset or modify the local DNS configuration

for DNS errors caused by local configuration exceptions, Windows users can enter the adapter properties through the Network and Sharing Center, find Internet Protocol version 4, and select Automatically obtain the DNS server address; they can also manually enter public DNS addresses, such as 114.114.114.114 or 8.8.8.8, These public DNS servers are more stable and can reduce the probability of DNS errors.

2, clear the local DNS cache

the local DNS cache of the device can also cause DNS errors if outdated or incorrect resolution records are stored. Windows users can enter the ipconfig /flushdns command from the command prompt to clear the local DNS cache; Apple users can enter the sudo dscacheutil -flushcache command in the end point to complete the cache cleanup, clean up and revisit the website, in most cases it can return to normal.

4. How to prevent DNS errors from happening again?

resolve the current DNS error, take some preventive measures to effectively reduce the probability of similar problems in the future.

1 Choose a stable public DNS server

try to choose a well-known and stable public DNS server to avoid using the operator's default DNS server, which may have DNS errors due to geographical or traffic problems. At the same time, dual DNS server addresses can be configured. When the primary DNS server fails, the device will automatically switch to the standby server to ensure the continuity of network access.

2, regularly check the network configuration and driver

develop the habit of regularly checking the network configuration of the device, confirm that the DNS server address is in a normal state, and timely update the network adapter driver to avoid DNS errors caused by the old driver. In addition, do not modify the network configuration parameters at will. If you need to modify it, backup the parameters in advance to prevent configuration errors from causing network abnormalities.

To sum up, DNS errors are common problems in network access, and their causes cover server failures, abnormal local configuration, and other aspects. By basic troubleshooting and locating the root cause of the problem, resetting the configuration, clearing the cache and other methods for repair, and finally with a stable DNS server and regular inspection habits, DNS errors can be effectively solved and prevented. Mastering these methods, there is no need to panic when network access is blocked, and the normal use of the network can be quickly restored.