Error 111 (net::ERR_TUNNEL_CONNECTION_FAILED): Unknown error
This message is sometimes displayed when accessing an SSL page via a proxy (including our own payment page PayPal).
It is caused by Chrome being unable to render the 502/302 proxy response for some sites (Issue 119713).
Check your browsers Proxy settings. If possible remove the proxy and try again.
To change this setting, go to [chrome://chrome/settings/](chrome://chrome/settings/)
Then Click `Show Advanced Settings`. Scroll down to `Network` and click `Change proxy settings…` Uncheck `Automatically Detect`.
Posted by Andy Gambles 8 months ago