Personal Outlook.com account locked — “Account recovery has been blocked” and no reinstatement option

My personal Outlook.com/Microsoft account has been locked unexpectedly.

When I try to sign in, I receive:

“Your account has been locked”

I then click the option to prove that I am human. Instead of allowing me to complete the verification, I immediately receive:

“Account recovery has been blocked

We have detected some unusual activity and have blocked the recovery of this account.”

I have not intentionally violated the Microsoft Services Agreement or knowingly performed any unusual activity.

I have tried the Microsoft Sign-in Helper, but it does not resolve the issue. I also tried the Microsoft account recovery process, but it only takes me through a password-reset process rather than giving me the full account-recovery questionnaire.

Microsoft's documentation indicates that a locked account may provide an account reinstatement option/link, but that option is not being shown to me. The human-verification button simply leads to “Account recovery has been blocked.”

I can sign in normally to a different Microsoft account, so I am able to access Microsoft Support while authenticated, but the Contact Support process keeps directing me to the same recovery resources that are already blocked.

I need to know:

How can I submit an account reinstatement/review request when the recovery process itself is blocked?

Is there a way for Microsoft Support/Online Safety to manually review this lock?

Is there an official escalation route for this specific situation when the reinstatement link is not provided?

This is a personal Outlook.com account, not a Microsoft 365 business account.

I would appreciate any help getting the account into the appropriate manual review/reinstatement process.