Error 0x800C013B is not a common problem that you have encounter in Outlook. Well, the occurrence appear when user try to send message. It is very annoying because your account is inaccessible. Because of this error, users can not send, receive, and even access your important emails in Outlook. Well, usually this critical error due to user name and an incorrect password occurs. Well, you should make sure that the login information used is correct and is the same account you want to open. Whenever user try send some mails or message to anyone a error message comes it be like this :
An unknown error has occurred. Protocol: SMTP, Port: 0, Secure(SSL): No, Error Number: 0x800C013B.