ERR_NAME_NOT_RESOLVED error usually appears when you are trying to log on a website. When this error occurs, there is also a message telling you the web page is not available. You cannot get through this error and reach the website.

Basically, ERR_NAME_NOT_RESOLVED error results from issues of your DNS address. Your Internet DNS address is blocked due to various reasons and therefore this ERR_NAME_NOT_RESOLVED error occurs.

The following are the solutions to this error. You can try them one by one and see if they are helpful.

1) Clear browser cookies

2) Flush and renew DNS

3) Change DNS address to Google Public DNS

4) Check your Firewall and Security Software

5) Power cycle your router

1) Clear browser cookies

Browser cookies can block your Internet DNS and then cause the ERR_NAME_NOT_RESOLVED error. You can try clearing browser cookies to fix this error.

In Google Chrome, you can:

a) Type “chrome://settings/clearBrowserData” in the address bar and hit Enter.

b) Only check Cookies and other sites and plugin data. (This means you want to clear this type of data only.) Then click on Clear browsing data.

c) All cookies in your browser are cleared. You can check and see if the problem is fixed.

2) Flush and renew DNS

Flushing and renewing DNS is a very good way to fix the ERR_NAME_NOT_RESOLVED error — this method is quite easy to perform and it is very effective.

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a) Press Win key or click on Start Menu and then type “cmd“. Right click on Command Prompt in the result and select Run as administrator. (*Running Command Prompt as administrator is necessary!) Click on Yes when prompted to confirm your action.

b) Type the following lines. (*Hit Enter after each line of code and wait for the completion of each process, and then type the next line.)

  • ipconfig /flushdns
  • ipconfig /renew
  • ipconfig /registerdns

c) Close Command Prompt and restart your computer. Then see if the error is fixed.

3) Change DNS address to Google Public DNS

Changing DNS address to a public one can help you fix browsing problems caused by DNS. You can change it to open DNS server address provided by Google.

a) Press Win + R. Type “control” and hit Enter.

b) In Control Panel, scroll down to find and open Network and Sharing Center.

c) Click on Change adapter settings on the left pane.

d) Right click on the connection that connect your computer to the Internet, and then select Properties.

e) Select the item Internet Protocol Version 4 (TCP/IPv4), and then click on Properties.

f) Select Use the following DNS server address. Enter for Preferred DNS server and for Alternate DNS server.

g) Hit OK all the way out and see if this method resolves the problem.

4) Check your Firewall and security software

The firewall or security software you are using can block the network connection or the browser and thus creates DNS block error. Check the settings of your firewall and security software. You may need to unblock your browser and your network connection. Or you can try disabling your firewall or security software to see if the error is fixed.

5) Power cycle your router

It is possible that there is something wrong with your router that creates the error. You can power cycle your router to see if it is helpful.

a) Shut down your router completely and unplug the power cable from your router.

b) Leave it for a few minutes.

c) Plug the cable back and turn on the router. Check and see if the problem resolves.

You may consult the manufacturer of your device for further assistance if you encounter any hardware issue on your router.

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