Hello, In order to better assist you with your issue please provide us with a screenshot. If you need help to create a screenshot, please see [[How do I create a screenshot of my problem?]] Once you've done this, attach the saved screenshot file to your forum post by clicking the '''Browse...''' button below the ''Post your reply'' box. This will help us to visualize the problem. Thank you! ----------------- There is security software like Avast, Kaspersky, BitDefender and ESET that intercept secure connections and send their own certificate. http://www.ehow.com/how_11385212_troubleshoot-reset-connection-firefox.html https://support.mozilla.org/en-US/kb/server-not-found-connection-problem 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''' https://www.bing.com/search?q=web+site+access+denied https://support.mozilla.org/kb/troubleshoot-SEC_ERROR_UNKNOWN_ISSUER '''This Connection is Untrusted''' is sometimes caused because the computer system clock is wrong. Check the time / date / time zone settings.

Screen shot below shows the error. The white area is part of the Firefox window and the blue area around it is the desktop.