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Hello,
May I please know when was the last time you were able to sign in with your Microsoft Account Successfully?
If you haven't signed in with your Microsoft Account for more than 2 years, you cannot use the 'Microsoft Account Recovery' form to recover your account.
Even if Microsoft still recognizes the account, recovery may be difficult or impossible if you no longer have access to your two-factor authentication method, particularly for the account that you haven't signed in to for years. Because the account recovery form requires sufficient information to verify that you are the account owner. If the account is very old, you may not remember enough of the requested details, which could cause the verification process to fail.