Change the password for your .pst file

  1. On the File menu, click Data File Management.
  2. Click the Personal Folders file (.pst) (Personal Folders file (.pst): Data file that stores your messages and other items on your computer. You can assign a .pst file to be the default delivery location for e-mail messages. You can use a .pst to organize and back up items for safekeeping.) file you want, and then click Settings.
  3. Click Change Password, and then type your old and new passwords.


Use strong passwords that combine uppercase and lowercase letters, numbers, and symbols. Weak passwords don't mix these elements. Strong password: Y6dh!et5. Weak password: House27. Passwords should be 8 or more characters in length. A pass phrase that uses 14 or more characters is better. For more information, see Help protect your personal information with strong passwords.

It is critical that you remember your password. If you forget your password, Microsoft cannot retrieve it. Store the passwords that you write down in a secure place away from the information that they help protect.

  • Your computer can remember your password so that you don't have to type it in each time you open the .pst. If your Microsoft Windows user account is password protected, and no other user has access to your Windows user account, select the Save this password in your password list check box after typing your new password.
Applies to:
Outlook 2003