In order to change the password on your Xbox Account, you will need to follow these steps:

1. Go to your Microsoft Account's settings.
2. Go to the "Security" section.
2. Click on the "Change password" button at the top.
3. Enter and confirm your email address.
4. Choose where you’d like get a security code (email or phone number).
5. Once you receive your security code, you’ll be prompted to choose a new password and enter it twice.

Note: Passwords should be at least 8 characters long and should contain a mix of upper and lowercase letters, numbers, and symbols.