I have a Microsoft Office Outlook 2007 in my PC, but it is not working properly. Outlook displays again and again the dialog box for password. I can't receive or send mail.
If Outlook displays the same dialog window related to password input, then you have to use your favorite browser to log-in on the web interface. Most likely the account is locked due to multiple wrong passwords entered. Once you log-in on the browser interface, the account should be unlocked. For the record, change your password while you're logged on the interface.
Use the following website to log in with your account credentials: https://outlook.live.com/owa/?authRedirect=true