Using Classic Outlook on Windows for personal email, calendar, and contact management
Hello, thank you for reaching out to Microsoft Q&A.
If you tried to sign in and received a message that your account is blocked, it means that your account's recent activity might have violated Microsoft's terms and conditions.
You can use the Outlook sign-in helper tool below to unblock your account first.
Unblock my Outlook.com account
If you are having issues recovering your account, you can try the account recovery form to recover your account.
Important: The account recovery form can only be used if two-step verification isn't turned on.
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.
Let me know if you still need more help.