While surfing the Internet, users often encounter the “DNS server is not responding” error when opening websites. We will tell you what to do in such situations and how to fix the problem in this article.
What is a DNS server, and why do you need it?
Before considering the possible causes of the error and options for solving it, let’s remember what a DNS server is and what function it performs.
A DNS server is a server that stores a database with information about which IP address corresponds to a specific domain name and translates them when a client requests a particular domain name. In processing requests, it associates an IP address with a URL or vice versa.
An error has occurred if the text “DNS server is not responding” appears when accessing the page.
And now, let’s go directly to the analysis of the question that worries us: “DNS server does not respond. What to do?”
Causes of appearance and their solution
The reasons why this error occurs can be of two varieties:
- The problem is on the provider’s side: perhaps the DNS server is unavailable, the electricity has been cut off, technical work is being carried out, etc.
- The problem is on the user’s side: the Internet is turned off, the router settings are reset, problems with drivers, etc.
Before proceeding with the solution, let’s determine at what stage the error associated with the unavailability of DNS server addresses appears.
Connect other devices to the router. If they also show an error, then the problem is in the network device. If DNS is not only available when working with a computer but also works correctly on a tablet, we begin to deal with a PC.
Problems with the router
To ensure the problem is with the router, you need to connect the PC directly to the Internet cable. If everything works, the DNS server is blocked by the router.
First, it is enough to turn off/on the router (reboot). If there is no special button for this, you need to turn off the power cord for a while. You should also reset the settings and check for a software update (after the update, you need to reboot the router).
Another way to solve the problem is at the address 192.168.1.1 (or 126.96.36.199) and deal with the solution in the administrator interface.
Changing DNS server settings
Google servers can provide guaranteed stability.
To install public Google DNS, click on the adapter icon with the right mouse button, go to the Properties option, find Internet Protocol version 4 (TCP / IPv4), select Properties, then General.
In using the following DNS server addresses option, specify the values:
the preferred DNS server is 188.8.131.52
alternative DNS server – 184.108.40.206
This scheme ensures that the user will always access public DNS servers.
Flush the DNS cache
Local DNS servers cache settings to speed up query processing. As a result, if the settings are changed, they will not take effect immediately, but the cached data will be displayed.
You can wait for the update or clear the cache to update the information.
A record of DNS servers used by the domain is stored in the cache for up to 72 hours.
To clear the ISP-side DNS cache:
Use the Win + R key combination for Windows and type cmd in the window. Execute the commands sequentially (after each one, use Enter):
- ipconfig /flushdns
- ipconfig /registerdns
- ipconfig /release
- ipconfig /renew
After restarting the computer, the changes will take effect.
Get the “DNS cache flushed successfully” message. For macOS, run the command in Terminal:
dscacheutil -flushcache; sudo killall -HUP mDNSResponder
Then you will need to enter a password, after which the cache will be cleared.
Antivirus blocked DNS
Antivirus installed on the computer can block access to DNS.
The error may appear after installing/reinstalling the antivirus or due to the maximum level of protection.
It is necessary to disable the antivirus temporarily.
To solve the problem in this case, you need to choose another antivirus or set the optimal protection settings.
It can be due to a computer virus infection or an incorrectly configured antivirus software.
First, you need to scan your computer for viruses to check that this is not the reason. If there are none, turn off the antivirus, and go to any site – if it is displayed correctly – you need to look for an error in the security software settings.
You should also check the network screen.
The installed operating system firewall or built-in antivirus can block it. We check in the same way as temporary shutdowns.
You can do this in the “Control Panel” in the “Security” section.
Problems on the part of the provider
If all the solutions listed above did not help, you need to check with the provider that there are no interruptions in work, problems, or technical work on his part.
The service provider can provide an approximate time frame for fixing the problem.
We analyzed how to fix the error and what to do if the DNS server does not respond or is unavailable.
We hope you can find a solution to the problem by following our instructions. If you have any unsolved questions, write in the comments, and we will try to help you.