I have the same problem from the morning with office365 url’s, in SAFARI web browser get can't establish a secure connection. In this moment inclusive, I having problems with SSL URL like my bank Desactivate the extension in Safari does not work. The only solution that is working is to close KIS. → Same situation For information, it is on a Mac with Catalina 10.15.5 → Same OS Other URL’s for Example → bancochile.cl