How to change your Windows Password If you are using Windows: Press CTRL-ALT-DEL and select Change Password. Follow the onscreen instructions Password requirements: Must not contain the user's account name or parts of the user's full name that exceed two consecutive characters Must not be one of your last 8 passwords Be a minimum of 8 characters Contain characters from three of the following four categories: Uppercase characters (A through Z) Lowercase characters (a through z) Numbers (0 through 9) Special characters (for example, !, $, #, %)