Managing personal Outlook.com account settings, security, and privacy
Hello,
If you have tried the Microsoft account sign-in helper automated process and it isn't working, you can use the 'Account Recovery form' here to recover your account:
Remember to use a familiar device from which you've frequently accessed your Microsoft account, as well as a familiar location. Microsoft will review your responses and respond within 24 hours. If you are verified, instructions on how to log back into your account will be sent to you, and if you are not verified, you will need to submit the Account Recovery form again. You can do this up to 2 times every 24 hours.
Important: The account recovery form can only be used if two-step verification isn't turned on.