The same method can be used to fix in Outlook 20:
Here is the video for a quick guide that will fix the error in Outlook 2007 and older version. It may be possible that your SMTP (outgoing server) requires authentication and you are trying to send the mail without authentication enabled. Methods to solve the error 0x800CCC0E in MS Outlook Enable SMTP authentication to fix 0x800CCC0E on permanent basis This error will result in a failure of message retrieval or transfer, and hence we recommend to fix this error as soon as possible using the following methods.
If you continue to receive this message, contact your server administrator or Internet service provider (ISP).” ’ reported error (0x800CCCOE): ‘Outlook cannot synchronize subscribed folders for. “!Task ‘Synchronizing subscribed folders for.
