Set up a Google DNS server and troubleshoot connection errors
Most ordinary users who surf the Internet usually don’t pay attention to the connection settings, believing that it’s enough to simply enter the necessary address in the browser, after which the requested page will be displayed on the screen. But sometimes there can be a lot of problems with access, including those related to incorrect operation of servers and DNS services. In this case, it is often recommended to change some parameters of the active connection and use the so-called alternative Google DNS servers. What it is, what it is for, how to set the correct options and eliminate some types of errors, then we will try to figure it out.
What is Google public DNS server used for?
If you do not delve into the technical aspects of DNS, it suffices to say that the principle of operation of any DNS server is to convert the addresses entered in the browser string in the form of combinations of letters, numbers and additional characters into digital codes, since computers can only work with them.Roughly speaking, at the output, you specify a familiar combination, starting with the obligatory abbreviation “www”, and when you redirect, the DNS server specified in the settings converts the request to code recognized by the remote computer. But why, then, need Google's DNS servers, if initially each provider providing Internet access services sets its own parameters? It is believed that such public servers work much faster, as they are able to handle a huge number of simultaneous requests. They are often used when access problems are observed just at the provider level or within some regional limits (not to be confused with VPN to bypass blocking).
How to configure DNS in the fastest way?
If we talk about setting the necessary parameters, in most cases the addresses set in the IPv4 / IPv6 protocol settings consist of combinations of only two numbers - eights and fours in different variations.
Based on the fact that in the settings of both protocols, the addresses must be set separately for the preferred and alternative DNS servers, as a rule, two main types of combinations are used:
- for preferred one - four eights;
- for the alternative - two eights and fours.
The easiest way to access the necessary parameters is through the Run menu, in which the ncpa.cpl command fits, and then through the properties of the currently active Internet connection, you are taken to the IPv4 parameters, where the necessary combinations are set. Please note that in this case you don’t need to find out the IP address of the Google DNS server as such, nor do you need to change the internal settings of the main IP address of the computer, the gateway and the subnet mask. The most important advantage of this approach is that such actions can be used with both wired and wireless connections, when automatic reception of all addresses is set.
Error “Can't find google DNS server address”: checking client status
Despite the fact that the settings look quite simple, sometimes there may be problems with this type of conversion. Errors are mostly related to disabling the DNS client service, cache overflow, incorrect TCP / IP settings and blocking of connections by antivirus protection programs. If instead of the requested page, an error message pops up, you must first check the customer service.
To do this, use the "Run" menu by entering the services.msc command to enter the appropriate section, find the DNS client in the list, turn on the service (if it is disabled) and set the start type to automatic. Then you need to save the changes and restart the computer for complete confidence.
Clearing DNS Cache
As for the inability of the Google DNS server due to the cache overflow, which can not be directly stated in the error message, this situation is also quite simple.
To perform such actions, you should call the command line (on behalf of the administrator) and enter the combination “ipconfig / flushdns” (without quotes) in it. After executing the command, the computer needs to be restarted completely.
Note: if the DNS addresses in the IPv4 settings change, they will need to be re-registered.
Change router settings
If you use a wireless connection based on a router, sometimes you can change the settings set in its settings to the desired address of the Google DNS server in the web interface of the device itself.
To do this, use the WAN partition. After saving the set options, the operating system will automatically start using them.For accuracy in the parameters of the protocols specified above, you will need to set all the same automatic receipt of addresses.
Reset TCP / IP settings
Finally, if the previous methods did not work, you can reset the TCP / IP parameters completely.
To do this, you must use the same command line and consistently execute several commands in it below (with no punctuation marks at the end of each line):
- ipconfig / release;
- ipconfig / all;
- ipconfig / flushdns;
- ipconfig / renew;
- netsh int ip set dns;
- netsh winsock reset.
Again, at the end of all actions should be setting the necessary addresses and a complete reboot of the system.
If the problem is in the security software, which, for unknown reasons, blocks Google’s DNS servers, first restart, log in using safe mode, set the required address parameters and check the connection. If everything works fine, reinstall the antivirus or even change the security package to some other one.