Thanks for the response. I now believe that the issue was caused by an incompatible software issue of that being Malwarebytes. They had happily coexsisted before but obviously not in the 2020 version. I did a reinstallation of KIS and let it remove Malwarebytes but strangely after saying it had removed Malwarebytes and restarting it would do this on a loop wanting to So cancelled the installation, manually uninstalled Malwarebytes and then reinstalled KIS. Afterward both Firefox and Evernote appear to be working as they should. Thank you.