issues with outlook 2013 and manually inputting POP3 account- error message

The Error message is:

"Log into incoming mail server POP3. Your e-mail server rejected your login. Verify your user name and password for this account in Account Settings. The server responded ERR invalid user word and password."

I have been using the same e-mail accounts with same passwords for my company e-mail accounts for a long time. In various office computers with Outlook 2010 and older, etc. Why does it not work in 2013? The operating system is Windows 8. Also in the earlier versions- in the manual set-up there was a section called "Connection": That is not in 2013. Please advise! Thank you!

Note: I can send but not receive e-mail on either of these accounts