In Windows 10 the user logs into their email account to start a user session. This should be sufficient to automatically login to websites that the user prefers to select to remain logged in during previous user sessions. With the most recent versions of C Cleaner I am forced to repeatedly login to websites like Facebook, Los Angeles and Orange County Public Library sites, or Microsoft's financial watch list during each new Windows 10 user session.
Add those sites to your 'Cookies to keep' list in Options>Cookies.