Microsoft Outlook is an email client and personal information manager sold as both a stand-alone application or as part of the Microsoft Office application suite. You can configure Outlook to remember your email password so you don't need to enter it each time you launch the program. While this is time-saving feature, you may later decide to disable this feature if your password changes or you simply don't want the program to store your password anymore.
Microsoft Office 2007 Instructions
Launch Outlook 2007. Click the "Tools" menu and choose "Account Settings."
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Choose the "E-Mail" tab. Select the email account you want to edit and click "Change."
Delete your password from the Logon Information section. Remove the check from the box next to "Remember Password," then click "Close."
Microsoft Outlook 2010 Instructions
Launch Outlook 2010. From the "Tools" menu, select "E-Mail Accounts."
Select "View or Change Existing E-mail Accounts," then click "Next." Double-click the email account you want to change.
Delete your password, then remove the check from the box next to "Remember Password." Click "Next," and then click "Finish."