Hey there! Nice to meet you!
If your husband does not have access to the 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 he has an active 2FA, ACSR will inform him that his recovery request will be ignored. If he only receives a message that the recovery request is either successful or indicates insufficient information, this means that 2FA is disabled.
He will need to keep trying until he is verified by Microsoft, and he can do this up to 2 times every 24 hours.
If his Microsoft account recovery request was not granted, please review this link for tips on improving his 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 access to any account.
Thank you for your understanding.
Best regards,
Darhyl