Zend certified PHP/Magento developer

Intermittent difficulty access Facebook.com

I am using Windows 10 and Chrome (both up-to-date) and can usually access Facebook.com. However, every few days I get the message

This site can’t be reached
The connection was reset.
Try:
• Checking the connection
• Checking the proxy and the firewall
• Running Windows Network Diagnostics
ERR_CONNECTION_RESET

It is only Facebook that is a problem. I have tried also with Edge and get the same result. Switching to a different user on the same computer results in the same error message. The only solution is to reboot the computer. I am using ESET Internet Security as a firewall etc. I have a different PC on the same network that does not have this problem. The only difference is that that the PC with the problem uses a Wi-Fi (mesh) whereas the other is a wired connection to the router.

I am completely baffled and would welcome any thoughts on the cause and a fix.