Managing personal Outlook.com account settings, security, and privacy
Hello,
Do you have any other verification methods to prove your identity?
If you do not have a recovery phone number or email address to verify your identity, you will have to replace the Security information in your Microsoft 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.