Your Microsoft account is the email address and password that you use to sign in to Microsoft services such as Xbox Live and Xbox Music. When you signed up for an Xbox LIVE or Xbox Music account, you associated that account with a Microsoft account. You use this Microsoft account to manage your Xbox LIVE or Xbox Music account and to download your Xbox LIVE profile.
Change your Microsoft Account password
To change your password, you need to sign in to your account from your computer: Here's how:
At accounts.live.com, sign in to your Microsoft account using the email address and password associated with the account.
Click Security & password. You may be asked to verify that you are the account owner by receiving a security code via text or email, and then entering it online. Then you see the following screen:
Click Change your password. You see the following screen:
Do the following:
In the Current password field, enter your current password.
In the New password field, enter the new password that you want to use.
In the Re-enter password field, enter the password that you created in the previous step.