If you know your current password and simply need to change it, you can do so with the steps below.

1. Go to office.com and choose the "Sign In" button.
2. If you are asked to pick an account, select "Use another account".
3. Enter your full email address and your current password when prompted.
4. If you have never signed on office.com before, you will be prompted to setup your password recovery options (see above).
5. Once you are signed in, the easiest way to change the password is to click your initials in the bottom left corner and choose "View account".

   

6. Choose the "Change Password" option.

   

7. Enter the old password, and you new password twice.  Your new password must be at least 8 characters, have a combination (3 out of 4) of uppercase, lowercase, numbers, and symbols.  It also can't have any part of your name, "boaz", "pirate", etc.