DNS Server Unavailable? Here’s How To Fix It

DNS Server Unavailable Here's How To Fix It

The internet today is more resilient than five years ago. There is more redundancy and more resources. Access to the internet is a given. Panic attacks can result from messages like “DNS Server Not Responding”, “DNS Server unavailable” or “Server DNS address could not be found”. Here are some suggestions to help calm your nerves:

“Is there anyone else having problems with their internet?” is the modern equivalent of pulling the fire alarm at a high school. It’s the fastest way for all hell to break out. Most of the time it is just one person having problems. This can usually be solved with browser troubleshooting techniques. If you receive the following message when running a network diagnostic: “Your DNS server may be unavailable”, additional troubleshooting might be necessary.

Your DNS server may be down for a variety of reasons. Your browser may need to refresh its cache or your router might be malfunctioning. Your firewall or DNS server could be causing issues. These issues could all lead to the same annoying error message. There are many solutions. We’re here to help you get off the edge and guide you through DNS troubleshooting.

How do DNS Servers work?

Understanding how DNS servers work is a great way to troubleshoot DNS issues. Websites have a name and number. The name is what users key in a browser to access a site. Numbers or IP addresses are tied to the domain name. These numbers tell the internet where the website is located. This is the job of a DNS server: to tie the number to the domain name.

The browser will ask the closest DNS server for the IP address of a website when it is named. After the DNS server has returned the IP address, the browser connects to that webpage. The system’s background tasks are not known by end-users.

The browser will return an error if the DNS server is down and the DNS server not responding. It takes only seconds for the news to reach everyone.

How to Fix DNS Server Unavailable / DNS Server Not Available

Any of these factors can cause DNS not to work:

  • Use the browser
  • Computer
  • Router
  • ISP

You may be able to fix the problem yourself if the problem is not related to your router or browser. It may take longer to fix a problem with your DNS server or ISP.


Sometimes, the problem isn’t with the DNS server. It’s often the browser. One of these tips will fix it if it is.

  • Reset your Browser. First, close the browser or quit it and then restart. Sometimes it’s that easy.
  • Clear the Browser’s Cache. Websites that are frequently accessed often can be cached on a local computer to speed up load times. The cached website and IP addresses don’t always change. The request will fail if the IP address used by the computer to access the website is not current. The problem can be fixed by clearing the browser’s cache
  • Try a Different Browser. Last but not least, try another browser. Chrome or Safari are better options than Firefox for accessing the internet. You may have to update your default browser if a different browser solves the problem. To see if the updates don’t work, uninstall the software and reinstall it to fix the problem.

If DNS remains unavailable after following these steps, it is time to look at routers and computer settings.


DNS settings are used to connect to the correct DNS server when a router or computer is first used. These settings can sometimes change so it is a good idea to inspect the device settings whenever a DNS problem arises.

  • Verify DNS Settings. Contact your ISP or network administrator for the correct DNS settings. Next, verify that the DNS settings are correct on your computer. OpenDNS and other services should be checked with your ISP or network to ensure that there are no incompatibility issues.
  • Deactivate Firewall/Antivirus Programs. Antivirus software and firewalls can block websites or IP addresses. It is easiest to test the firewall and antivirus software by deactivating them. Then, try connecting to the internet. If you are successful, check the DNS settings in the firewall and antivirus software.
  • Turn off secondary connections. To avoid conflict, disable any other connections that may be open to the computer such as Bluetooth. Disable peer-to-peer on a Windows system.
  • Update Network Adapter Drivers. Verify that your network adapters are current. Update drivers to connect again if necessary.

If DNS settings on devices are correct but the DNS server remains unavailable, it is time to inspect the router.


Problem connecting to DNS server not responding to the router. Sometimes the settings are wrong or the router may need to be changed. These are some tips to troubleshoot routers.

  • Connect to your Ethernet. If you suspect that your router is the problem switch to a cabled network. An Ethernet cable connects a computer to the router. The router may be at fault if the ethernet connection resolves the problem. Verify that your router is properly configured.
  • Restart the router. A reset of the router can help resolve DNS failure issues. The router’s cache will be updated after it is reset. This may resolve the problem. Unplug your router and modem. Wait at least 15 seconds before you plug in the power cables. Wait for the devices’ to turn on.
  • Check for updates to your router. Check for router updates. Consider applying the updates if they are available.

If routers don’t work, it is likely that the problem lies with your ISP.


DNS servers are maintained by ISPs. Sometimes, there is a service change that needs to be made locally. The internet connection could be lost if this happens.

  • Is the ISP responsible? A DNS server of an ISP may be down. You can check by pinging the DNS servers’ IP addresses. Any addresses that don’t respond should be removed. Select the “Obtain DNS server addresses automatically” option to find out the IP addresses. If this option is not available contact your ISP.
  • Is this the DNS Server? A DNS server that becomes overwhelmed or malfunctions, making your DNS server unavailable. You can switch to another DNS server by using the list of DNS server addresses.

How to Avoid DNS Problems

While we cannot eliminate all DNS problems, we can minimize the possibility of them. It works to identify and resolve potential issues such as:

  • Make sure that drivers and software are current.
  • Monitoring infrastructure security and health.
  • For speed tests, use network diagnostics.

We have a process of three steps that we follow if there is a problem once we have been contacted.

Step 1. Our IT specialists will examine the issue using mobile device manager (MDM) software to see what you see.

Step 2. To minimize time and reduce the possibility of problems such as router settings or browser updates, our team thoroughly investigates these areas.

Step 3. We will continue to work with ISPs, DNS services, and hardware manufacturers until your DNS server works.

Your company does not have to be present on the phone to monitor the activity of third parties trying to solve the problem. Instead, you can focus on what you do best and let us handle the rest of the DNS unavailable.

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