When starting the HTML5 version of a Empirum Management Console (EMC) at a Matrix42-SaaS environment, an error message
"Your session ended because an unexpected server authentication certificate was received from the remote PC. Ask your admin or tech support for help."
with detailed certificate information may occur:
(depending to your browser language)
The underlying SSL certificate was replaced but your Web Browser still cache the former SSL certificate information.
Clear the cache of your Web Browser.