Microsoft Community
...Microsoft Community...
https://www.answers.microsoft.com/en-us/mobiledevices/forum/all/x2-01-whatsapp-asking-for-authority-certificate/3adefb1a-5384-4fad-978c-f0dc7ca48e58
Microsoft Community
...Microsoft Community...
https://answers.microsoft.com/en-us/windowslive/forum/livemail-wlsettings/change-from-imap-to-pop3/984e1f72-6142-4ad6-9e28-ac0a218f8454