Sending, receiving, and organizing email in Outlook.com
Hello, thank you for reaching out to Microsoft Q&A.
May I please know if you have any other verification methods to prove your identity? Such as recovery phone number or email address?
If yes, you can sign in to the security settings page here to update the correct information - https://account.live.com/proofs/Manage
If you are unable to verify your identity as the verification code is being sent to an email address that is no longer active, you will have to replace the security information in your account.
That is, on the Verify Your Identity screen, select 'I don't have any of these' and follow the prompts to replace the Security information.
Note - If you remove all of your previous security information and replace it with something new, your account will be put into a restricted state for 30 days.