Hello and thank you for using JustAnswer.
Can I have you go to this website and make sure you can log in here before we proceed with outlook: https://secure.eircom.net/email
If you cannot log in to this page you will need to change your password. Do so with the link on that page.
Then go back into your outlook and enter your new password. It should be saved automatically.
If it keeps asking for the password still do the following: