What the site so they can see what it says if it really is a site issue or not?

What is the exact error messages? --------------- 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-error-message https://support.mozilla.org/en-US/kb/connection-untrusted-error-message [https://support.mozilla.org/en-US/kb/websites-dont-load-troubleshoot-and-fix-errors?redirectlocale=en-US&redirectslug=Error+loading+web+sites Websites don't load - troubleshoot and fix error messages] http://kb.mozillazine.org/Error_loading_websites

In a private message, [/en-US/user/McCoy-thereal McCoy] said Maybe change the values of these prefs on the   "about:config"   page to   "false" : "security.insecure_field_warning.contextual.enabled " "security.insecure_password.ui.enabled"