Owing to several factors, your webpage fails to load and shows different error messages. This often happens, such as ERR_NAME_NOT_RESOLVED. Do not worry, this article will guide you through a series of verified and practical solutions.

Windows 11 ERR_NAME_NOT_RESOLVED Problem

ERR_NAME_NOT_RESOLVED is a type of webpage error, suggesting that your browser cannot properly transform the specific website’s URL into an IP address, causing the web page content to fail to appear. Essentially, the fundamental cause of this situation is a DNS issue, which could originate from various conditions. For instance:

• DNS server failure: When the DNS server encounters problems, the browser may be unable to resolve the website URL and display the ERR_NAME_NOT_RESOLVED error.
• Internet connection issues: An unstable or interrupted network connection can also lead to the DNS error.
• Firewall or Antivirus interference: Firewalls or antivirus software might block website access or internet connections for certain reasons. Temporarily disabling them may resolve the issue.

Next, we will delve into how to fix this ERR_NAME_NOT_RESOLVED error.

How to Fix ERR_NAME_NOT_RESOLVED

1. Use MiniTool System Booster

Based on our research, it has been confirmed that troubleshooting the internet connection and clearing your browser cookies can help with the ERR_NAME_NOT_RESOLVED problem. To accomplish these tasks simultaneously, we strongly suggest trying MiniTool System Booster.

This program enables you to clean Windows junk files and Internet junk files (including browsing history, cached files, cookies, etc.), find available memory, reduce startup programs, speed up downloads, and more.

Its Deepclean feature includes 7 PC cleanup tasks: NetBooster, Internet Cleanup, Windows Cleanup, Registry Cleanup, Security Optimizer, Program Accelerator, and Memory Mechanic.

The first two can identify and fix internet connection issues and sweep unnecessary cache, cookies, and saved passwords in all browsers. Here's how this tool operates.

Step 1. Launch MiniTool System Booster Trial and access its main interface.

Step 2. Open the Performance Home menu at the top and select Deepclean.

Step 3. Tap on START CLEAN to begin the process and follow its wizard to finish each step.

It will automatically proceed to the next task after completing the previous cleanup. You can either continue with the remaining tasks or skip some based on your preference.

2. Clear Windows DNS Cache

An outdated DNS cache on your device can obstruct your ability to reach a website. You can manually flush the DNS cache stored on your PC to see if the issue is resolved. Here's the deletion process:

Step 1. Open Windows Search using the Win S shortcut, search for Command Prompt, and run it in administrative mode.

Step 2. In the command window, enter the following commands one by one and press Enter after each line.

ipconfig /flushdns

ipconfig /registerdns

ipconfig /renew

ipconfig /release

Step 3. Once done, close the command box and attempt to access the site again.

If this method does not work, clearing Chrome DNS cache might solve the problem. Chrome caches all DNS entries to speed up the loading of frequently visited websites. A DNS error in Chrome could result from incorrect entries it stored. To do that:

Step 1. Launch Chrome and copy & paste chrome://net-internals/#dns into the address bar. Then press Enter.

Step 2. Click on the Clear host cache button. Then you need to reopen Chrome for the changes to take effect.

Check whether you can access the site successfully or not.

3. Manually Adjust DNS Settings

Another effective way to resolve ERR_NAME_NOT_RESOLVED is changing the DNS server. The DNS server is responsible for resolving the correspondence between domain names and IP addresses. Let’s see if changing it helps:

Step 1. Press the Windows and I keys together to open Settings.

Step 2. Navigate to Network & Internet > choose Ethernet in the left sidebar > select Change adapter options.

Step 3. Right-click on the connected adapter and select Properties.

Step 4. Choose Internet Protocol version 4 (TCP/IPv4) and click the Properties button.

Step 5. Under Use the following DNS server addresses, type the DNS server addresses below:

#Google DNS

Preferred DNS server: 8.8.8.8.

Alternate DNS server: 8.8.4.4.

#Open DNS

Preferred DNS server: 208.67.220.222

Alternate DNS server: 208.67.222.220

Step 6. Tap on OK on both windows and try accessing the website again.

4. Inspect Your Firewall and Antivirus

Your firewall or antivirus software might block internet connections or certain browsers, causing the Windows 10 ERR_NAME_NOT_RESOLVED bug. If needed, disable them temporarily to check if the error is fixed. Here's how to disable the firewall:

Step 1. Type Control Panel in the search box and press Enter.

Step 2. In the Control Panel window, select System and Security > Windows Defender Firewall > Turn Windows Defender Firewall on or off.

Step 3. Check Turn off Windows Defender Firewall (not recommended) for both Private and Public network settings. Then click on OK and restart your computer to apply the changes.

After completing your work, remember to re-enable them.

Conclusion

Now, you may comprehend the reasons for the appearance of the ERR_NAME_NOT_RESOLVED problem and how to fix it on your own. In conclusion, it is highly recommended to use MiniTool System Booster to optimize and enhance the overall system performance of your computer.

If you encounter any issues with our product, please feel free to contact us via and we'll respond as quickly as possible.

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