firefox 39.0 untrusted connection hiw to fix

[momk62]

Turned on PC could not get on FB at all, Outlook Mail and most web sites. I did a clean Windows install Firefox worked for a day, them Untrusted Connection again my clock is fine in fact I turned back five years and Firefox worked. I uninstalled Aviria Pro install AVG Free still have the problem. It works in safe mode. Help

 

[cminusincplusplus]

Maybe this will offer a solution.
https://support.mozilla.org/en-US/kb/connection-untrusted-error-message