What is DNS error all about? Common DNS errors and how to Fix them

Your DNS server is what translates the words that you type into a URL bar into the IP address necessary to connect you to the internet. DNS stands for Domain Name System. When it’s working correctly, it allows you to use internet-connected services, like email or a web browser. But when it’s not, you’re likely to see a message that says “DNS error.” This can be frustrating, especially for team members or clients who may not be tech-savvy and can’t figure out what’s wrong. This article will show you how to fix this problem or guide IT users on what to do when a DNS error pops up.

How to diagnose a DNS error

What happens if the internet isn’t working, but you haven’t been explicitly told it’s a DNS error? There are a few ways to confirm it’s a DNS issue and not something else. Since your DNS translates URLs into the correct IP address for websites or web services, you can try skipping the DNS function by typing the IP address directly into your browser. If you don’t know the IP address, try Amazon’s, which is 54.239.28.85. If the page loads, you’re dealing with a DNS error.

You can also run a ping test to find the IP address you need. Open Command Prompt by typing “cmd” in the Windows Start menu search bar, then click on Command Prompt. Type “ping” and the website name you’re looking for, such as “ping Amazon.com,” and the IP address will be shown.

Is your DNS error related to your ISP?

In some cases, a DNS error is your internet service provider’s (ISP) fault, and you might spend hours troubleshooting locally, only to realize it’s beyond your control. Call your ISP to check if they’re having any issues, or use the ping test above to see if their servers respond. If they don’t, remove them from your DNS list and try reconnecting.

The problem could also be with the website itself, so try browsing to another site or use tools like DownForEveryoneOrJustMe to check if the website is down.

Steps to troubleshoot a DNS error

Okay – you’re sure you have a DNS error and you want it resolved! Start by running the networking troubleshooter to check for issues, or restart your modem or router – you’d be surprised how often that works. Make sure your cables are connected properly, your hardware hasn’t been disturbed, and that both your WiFi and router are on. Another potential quick fix is checking your power settings, as energy-saving modes might be disrupting your connection. Go to Power Options under Hardware and Sound, click “Change Plan Settings,” and make sure both “On battery” and “Plugged in” are set to “Maximum Performance.”

It’s also a good idea to run a malware scan using your antivirus software to rule out any malicious interference.

Once you’ve done all this, here are a few more in-depth troubleshooting options.

Flush DNS cache

You may need to refresh your DNS cache to delete outdated information. Open Command Prompt and type “ipconfig/flushdns.” You can also reset the Winsock API (which manages registry and catalog settings) by typing “netsh winsock reset.” You might need to restart your computer for these changes to take effect.

Consider TCP/IP settings

One of the most common causes of DNS errors is TCP/IP settings. Check these by going to Control Panel and selecting “Manage network connections.” Under Local Area Connections properties, look at the IPv4 and IPv6 properties. Ensure the IP addresses and DNS server addresses are set to obtain automatically, and that DHCP is enabled both on your device and the router.

Try a clean reboot

A clean reboot ensures that only essential services start up, which can help identify any buggy software or glitches. Go to System Configuration, click “Hide all Microsoft Services,” then click “Disable All.” Open Task Manager and disable all applications individually before restarting your computer. Once it restarts, test your DNS server again. If it works, start re-enabling applications one by one to identify the cause of the issue.

My DNS error is still happening!

If you’ve tried everything and are still experiencing a DNS error, try using a service like OpenDNS or manually changing your DNS servers to Google’s servers. Go to Change Connection Options and enter 8.8.8.8 as the Preferred DNS server and 8.8.4.4 as the Alternate DNS Server.

If the issue persists, contact your ISP or consider upgrading your router or network hardware. You may also want to update or reinstall your network adapters and drivers.

Conclusion

DNS errors can be frustrating but are often straightforward to diagnose and resolve with the right approach. By following simple troubleshooting steps, such as restarting your router, checking your DNS settings, or refreshing your DNS cache, you can quickly get back online. If the issue persists, exploring advanced solutions like changing your DNS server or consulting your ISP may be necessary. For IT professionals managing multiple environments, tools like Atera can provide critical visibility into DNS issues across client systems, ensuring smooth network performance.

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