Hey there! Nice to meet you!
Kindly try the Microsoft Sign‑in Helper troubleshooter to identify the sign‑in error and this is also the fastest way to verify your identity through this link: https://support.microsoft.com/account-billing/microsoft-account-sign-in-helper-7117cc8d-0d68-4658-b4fb-c4b7ee8a8e28
If this is a case where your username or password has stopped working, please recover your account at this link: https://support.microsoft.com/account-billing/my-username-and-password-have-stopped-working-802abb61-19db-4e88-a5ff-fc83c97d1a9d
If it doesn't work and if you do not have any linked verification methods for a password reset, the only way to recover/unblock the account is through the account recovery web form: https://account.live.com/acsr
Important: If you have an active 2FA, ACSR will inform you that your recovery request will be ignored. If you only receive a message that the recovery request is either successful or indicates insufficient information, this means that 2FA is disabled.
You'll need to keep trying until you're verified by Microsoft, and you can do this up to 2 times every 24 hours.
If you didn't receive the results from the account recovery webform, please try submitting another request via Incognito/InPrivate window and using different devices and network services. Then please check your email inbox, junk, and spam folders.
If your Microsoft account recovery request was not granted, please review this link for tips on improving your chances of a successful recovery: https://support.microsoft.com/office/dc56c3e3-dff0-4ed5-8edb-60290eea6b53
Please be advised that Microsoft Support will not be able to grant you access to your account.
Thank you for your understanding.
Best regards,
Darhyl