Here is the email I recently received when I get this problem again
I got the same msg ERR_CONNECTION_REFUSED and was blocked from doing a search.
(But I was able to listen and watch YouTube videos!)
I do not know what said computer, but I'm running Chrome on Windows 7 and above the message said:
1) Click on the Chrome menu (the two bars in the upper right corner of the Google homepage.
2) Go to Settings> then " Show advanced settings "
3) proxy settings, click change
4) LAN settings
5) unclick" use a proxy server for your LAN "
was still ERR_CONNECTION_REFUSED
When closed all windows and programs
rebooted PC
Now, everything is fine! (Rebooting (RESET) is a burden, but it helps)
I hope this information helps you. Http://www.deskdecode.com/err_connection_refused/