Once you successfully register, the next step is to use your email address/phone number along with the password to access your account. In case, if you enter any of these incorrectly, you will end up facing an error. If the email or phone number is incorrect, then re-check what you have typed.
On the other hand, if the password is incorrect and you have already verified the same, then perform the stepwise instructions for Account Live com password reset process to set up a new password for your account. While you visit either on Outlook Password Reset or account.live.com/acsr page to reset Account Live password, it is mandatory to follow the onscreen instructions.
Read more:account.live.com/password/reset