Tutorial on How to Fix the Issue “DNS Server Unavailable”

DNS Server UnavailableThe Domain Name System (DNS) server is the place where all of the domain names for the sites that you have visited are stored. So when finding a domain name in a web browser, it is forwarded by your router to a DNS server. However, if the specific site’s domain name has saved. So it then gives back the corresponding IP address. Similarly, this creates the loading process for those sites especially faster. In this article, we are going to solve the issue of DNS Server unavailable.

This procedure is so great, it is not unusual for the DNS server to fail to create a connection every now and then. Trying to troubleshoot your web browser in this instance can also often result in a ‘DNS server, not Answering’ issue.

However. a lot of factors are the reason for this specific issue to display on your screen. So the most prominent of which is the chance that the server itself is recently encountering an outage. Fortunately, this error is often accompanied by a few easy solutions.

Way To Fix The “DNS Server Unavailable” issue

Have you ever received this type of an error that the DNS server is unavailable? To fix this, these issues are able to sometimes corrected by something as simple as changing browsers. Messing with a few of your firewall settings, or rebooting your router. Similarly, it is up to you to figure out the reason and subsequent correction for the issue.

Begin by using a different browser for the web pages you are trying to open. So this means that if you are recently receiving the error while using the Mozilla Firefox browser, so you have to switch it up to Microsoft Edge or Google Chrome. Should the issue continue, we are able to move on to testing out other devices.

You have to try to open a webpage using a mobile device. On a similar network, to ensure that the issue is not the result of hardware failures. So it would also be advantageous to attempt to connect to the same webpages using your data plan to identify. However, if the cause is, in fact, the cause is just with the DNS server.

At one time you have wearied these steps, so then reboot your router. Whether the “DNS server unavailable” error is still occurring. We will have to check a few more effective methods.

Also, read this article: What is mdnsresponder.exe, and Should I Remove it?

Flush DNS (Windows)DNS Server Unavailable

The best and simple method for fixing the issue with the DNS server being unavailable is to flush it using Command Prompt.

  • First of all, you have to pull up the Run dialog by concurrently tapping the Windows key and R key.
  • Then type cmd into the field and tap Enter.
  • Simply in the Command Prompt window, you have to type ipconfig /flushdns and press Enter.

  • Here you have to just follow up by typing ipconfig /release. Then tap Enter.

  • Simply at last, type ipconfig /renew and press Enter.

Flush DNS (MacOS)DNS Server Unavailable

On a Mac, you are also able to flush the DNS. The way in which you do this will differ slightly depending on the version of Mac your computer is running. It often only involves a change in the syntax used during the method.

  • Firstly you have to open a Finder window. Then go into Applications, followed by Utilities, and ending in the Terminal.
  • Enter in the following syntax pertaining to the version of macOS you are now using:
  1. macOS High Sierra – sudo killall -HUP mDNSResponder; sleep 2; echo macOS DNS Cache Reset | say
  2. macOS Sierra – sudo killall -HUP mDNSResponder;say DNS cache has been flushed
  3. macOS Mojave – sudo killall -HUP mDNSResponder; sleep 2;
  4. macOS X El Capitan/Yosemite – sudo dscacheutil -flushcache;sudo killall -HUP mDNSResponder; say cache flushed
  • Here click the Return key, then enter your password, and then hit the Return key once more.
  • Then you should look for the audio alert that indicates a successful DNS flush before closing the Terminal.

Although the macOS X cache clearing will have a few added steps in order to fully flush it out. Simply now you will have to just flush both MDNS and UDNS caches on top of the steps previously taken.

Similarly, before exiting from the Terminal, follow the commands that are mentioned below:

  1. For the MDNS cache, type sudo discoveryutil mdnsflushcache
  2. For the UDNS cache, type sudo discoveryutil udnsflushcaches

Clear all the Multiple Antiviruses

However, you are able to never have a lot of protection. Thus this may be somewhat true in this world, especially in the world of  technology, having multiple antivirus programs installed on the same computer can literally obstruct the protection provided.

Now check to view if you have two or more antivirus programs currently running as this may be the cause for the DNS problem. At one time you turn off all additional programs. So reboot your system and the problem should resolve itself.

Ensure that moving forward you only keep a single software program running to help protect yourself from unnecessary malware attacks. Similarly, this not only enlarges security but are able to help you to avoid running into more DNS server issues.

Changing DNS Servers

Whether you have already attempted all fixes written here and are still receiving the same “DNS server unavailable” error. So it may be in your best interest to convert your DNS servers. Plenty of public DNS is here from which to select. Google’s free DNS being one of the more popular choices.

However, the method for this is very easy. It can also be completed in a few clicks, depending on where you select to change it. So here we will be using the Windows operating system in each of our examples.

DNS Changes through the Router

First of all, here you have to first access your router by organizing your web browser.  Entering the Default Gateway address into the URL bar.

  • Sy opening a Command prompt window, you can easily find the Default Gateway by typing ipconfig, and also press Enter. However, copy the numbers present beside Default Gateway in the pulled up information.
  • Now login to the router using the proper credentials.
  • Here locate your internet account information which is able to often found in a similarly named tab.
  • Navigate to the DNS serve. Choose the option that best mirrors your used internet protocol (IPv4 or IPv6).
  • Then enter the address of the DNS server you desire to use in place of the current one.
    • Google’s DNS server will be in the suggested the most DNSv4 and in the alternate DNS server. Similarly, in the case of IPv6, you’ll want to use 2001:4860:4860::8888 and 2001:4860:4860::8844 respectively.
  • Finally, save the edited information. Then exit the router interface.

DNS Changes through Windows OS

For this: DNS changes through Windows OS, this possible when you will follow these steps.

  • Firstly access your network connection properties, by organizing the Run function (Windows key + R). Then typing in ncpa.cpl. Press Enter.
  • Windows 10 users can easily right-click the Windows icon at the lower left of the desktop screen. So you have to here choose the Network Connections from the menu.
  • Now choose the network adapter currently in use. WLAN for WiFi connections and LAN for direct connection, normally through the ethernet cable.
    • Windows 10 will have your options on the left side panel. So choose just one. Then select Change adapter options from the main window.
  • Right-click your choice and choose Properties.
  • Similarly, in the Networking tab, you should highlight your IP version (v4 or v6) from the menu. Then tap the Properties button.
  • Here tap the radial for Use the following DNS server addresses: in order to turn on editing capabilities.
  • Simply enter in the DNS server addresses that you have planned to use.
    • Whether you had been using a past DNS server not get automatically, remember to explain the addresses. Just in case you desire to return using them at a later date.
  • Simply confirm the changes by tapping OK.

Test Current DNS Server

Moreover, at one time the DNS servers have been turned. You have to open a browser and then try to set-up a well-known site such as www.google.com. However, if the site is currently accessible, then the new DNS is working perfectly. So if not, then enter one of Google’s IP addresses,, directly into your browser and hit Enter.

Further, you have to look for the familiar Google logo and then the search bar to appear. Thus if this also not work, so then the issue may lie with the internet and not the DNS server itself. Hence contact your internet service provider for furthermore help if this is the case.

Also Read: How Do I Insert Excel into Word Documents

DNS Server Unavailable-Conclusion

The Domain Name System (DNS) server is the place where all of the domain names for the sites that you have visited are stored. So when finding a domain name in a web browser, it is forwarded by your router to a DNS server.

This procedure is so great, it is not unusual for the DNS server to fail to make a connection every now and then. Simply trying to troubleshoot your web browser in this instance can also often result in a ‘DNS server, not Answering’ issue.

Furthermore, we have thoroughly mentioned the whole method to resolve the error: DNS Server Unavailable.

Leave a Reply

Your email address will not be published. Required fields are marked *