If you get the following error message when trying to connect to a site over HTTPS:
[SOLUTION]Secure Connection Failed
An error occurred during a connection to sandbox.av-rd.com:10080. SSL received a record that exceeded the maximum permissible length. Error code: SSL_ERROR_RX_RECORD_TOO_LONG
The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
Check if you're actually connecting to HTTP, but prefixed the URL with "https://".
Common example is, if you're port-forwarding or SSH-tunneling http+https connections to non-default ports, and accidentally mixed them up in the URL.
That's what happened to me 2 minutes ago.
A bit embarrassing, but happens