Windows 10: Err_connection_refused

I'm having a little problem with my HP Laptop. Yesterday I brought it to my company for the convenience of work. My PC company is still operating normally, accessing the Internet normally. But when I connected the laptop via wifi and accessed Gmail (Facebook, Youtube ...) I was stuck and the following error message appeared

This webpage is not available Err_Connection_Refused

This issue appears on both Google Chrome and Firefox.Any suggestions?

:)

 

How can I change my firewall settings I cannot access ERR_CONNECTION_REFUSED

ERR_CONNECTION_REFUSED

 

ERR_CONNECTION_REFUSED

Add-ons are apps that Internet Explorer uses to interact with web content like videos and games. While add-ons can make your browsing experience better by giving you access to great web content, some add-ons can pose security, privacy, or performance risks.
Make sure any add-ons you install are from a trusted source. To turn off add-ons on Internet Explorer, you can follow the steps below:

• Open Internet Explorer, select the Tools button, and then select
  Manage add-ons.
• Under Show, select All add-ons
  and then select the add-on you want to turn off.
• Select Disable, and then Close.

Should you need further assistance, don't hesitate to get back to us.

 

You may need to set up a proxy to get thru your company firewall.

 

Here are several reasons that could lead to this error connection refused:

• Firewall blocks specific websites.
  
• Proxy server issues.
  
• DNS issues.
  
• Expired browser caches.

See more this video below to learn more how to fix Err_connection_refused error: