If you have changed your user password that you use email services on you'll need to update your mail clients too. To update your mailbox password in Microsoft Outlook.
In Outlook 2010 or Outlook 2013, select File from the top menu, and the select the Account Settings button and then Account Settings... from the drop down menu.
(If you are using Outlook 2007 instead select the Tools menu and then Account Settings).
A list of your mail clients configured in Outlook will load. Select your account from the list, and then the Change button.
Your mailbox settings will load. Select the Password field and type in your new password.