HiCustomer Thank you for asking your question on JustAnswer.
To get rid of the error message you need to remove the cox.net from the email you have configured as its not able to identify your password XXXXX is the reason its popping up.
Follow the steps to remove it from outlook
To reinstall it back follow these steps:
Note You have the option to have Outlook remember your password XXXXX typing it in the Password box and selecting the Remember password check box. Having Outlook remember your password XXXXX that you won't have to type your password XXXXX time you access the account; however, it also means that the account is vulnerable to anyone who has access to your computer. Use strong passwords that combine upper- and lowercase letters, numbers, and symbols. Weak passwords don't mix these elements. Strong password: Y6dh!et5. Weak password: House27. Use a strong password XXXXX you can remember so that you don't have to write it down.