You have to modify the DNS settings in your system explicitly and use the DNS IP addresses. If the first option didn’t resolve the issue, you can try to use the Public DNS by Google and see if it can help fix the problem.

Note: If you are using a third-party proxy service, you have to disable it.

Now click the OK and the Apply buttons.

Uncheck the “Use a Proxy Server” option for your LAN and then make sure that the “Automatically detect settings” option is checked.

After that, go to the Connections tab and select the LAN settings.

Then type “inetcpl.cpl” in the field and hit Enter to pull up the Internet Properties.

Tap the Win + R keys to open the Run dialog box.

Removing the Proxy might also help you in fixing the “This webpage is not available, Err_Connection_Closed” error. If you’re still getting the same error message, then proceed to the guide below. So before you troubleshoot the problem using the suggestions given below, you need to refresh your browser first or you could also tap Ctrl + F5 on your keyboard to hard reload the webpage. The problem lies in your Windows 10 computer and your internet connection since this is a network issue.

Similarly, you may also get other error messages like “Err_Network_Changed”, “Err_Connection_Reset” and “Err_Internet_Disconnected” errors in different browsers like Chrome, Firefox, and Edge. If you suddenly encounter an error message that says, “This webpage is not available, Err_Connection_Closed” while browsing the internet or visiting a website and the website fails to load, then it means that there is some problem with your network connection. How to Fix Err_Connection_Closed error on Windows 10

Err connection closed chrome