Sending, receiving, and organizing email in Outlook.com
If your account is showing as locked, please follow the instructions provided by Microsoft in this article: Microsoft account has been locked
If you are still unable to access the account after following those instructions, you can submit the Account Reinstatement form. Please note that this is different from the account recovery form, which has a limit of submissions per day. After submitting, avoid sending additional requests, as this may slow down the response.