Web 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.'' There is security software like Avast, Kaspersky, BitDefender and ESET that intercept secure connection certificates and send their own. https://support.mozilla.org/en-US/kb/firefox-cant-load-websites-other-browsers-can https://support.mozilla.org/en-US/kb/firefox-and-other-browsers-cant-load-websites https://support.mozilla.org/en-US/kb/secure-connection-failed-firefox-did-not-connect https://support.mozilla.org/en-US/kb/websites-dont-load-troubleshoot-and-fix-errors [https://support.mozilla.org/en-US/kb/what-does-your-connection-is-not-secure-mean What do the security warning codes mean]

Thank you I've already been through all of those troubleshooting links... they don't solve my problem.

[https://support.mozilla.org/en-US/kb/delete-browsing-search-download-history-firefox Delete browsing, search and download history on Firefox] {web link} [https://support.mozilla.org/en-US/kb/delete-browsing-search-download-history-firefox?redirectslug=Clear+Recent+History&redirectlocale=en-US#w_remove-a-single-website-from-your-history Remove a single website from your history] {web link} Open the History Manager '''<Control> ''(Mac=<Command>)'' <Shift> H. ''' In the search bar, enter the name of the site. Right-click on one of the listings and select '''Forget About This Site.''' This should remove all information, including any site settings '''And Passwords.'''