There is security software like Avast, Kaspersky, BitDefender and ESET that intercept secure connections and send their own certificate. 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 http://kb.mozillazine.org/Error_loading_websites

Hi, I'm not getting any warnings, so try downloading from * [https://get.adobe.com/flashplayer/otherversions/ Install Flash Player] - take care to deselect any optional offers! ''If your question is resolved by this or another answer, please take a minute to let us know. Thank you!''

thanks for the link scribe problem solved , also thanks Fred McD

Glad to help. Safe Surfing.