If you have forgotten your password and you have already entered your account verification information you can reset your password in a couple simple steps.
Go to https://office.com/
Enter your user ID and click Next.
Now click the “Forgot Password” link.
Enter the CAPTCHA characters in the picture that are displayed in your web browser
Select your method of account validation. A text message will probably be the fastest.
Enter the verification code that was sent.
Create a new password.