before the most recent update I have no trouble connecting to my centurylink.net email.....and now after the update I get this message: Secure Connection Failed An error occurred during a connection to webmail.centurylink.net. PR_CONNECT_RESET_ERROR The page you are trying to view cannot be shown because the authenticity of the received data could not be verified
There is security software like Avast, Kaspersky, BitDefender and ESET that intercept secure connection certificates and send their own.
Websites don't load - troubleshoot and fix error messages
What do the security warning codes mean
Bing search https://www.bing.com/search?q=PR_CONNECT_RESET_ERROR This simply means, that the peer or some middlebox in between (firewall) is terminating the connection.
What does the header of your question and the link to the site you posted
at the bottom have to do with your problem ?
Just curious .....