Sending, receiving, and organizing email in Outlook.com
Hello,
If you have access to your current email address to Verify Your Identity,
Add a new security email address or authenticator app first, and then remove the recovery email address.
You can do that by signing in with your Microsoft account on the Security Settings page here-
https://account.live.com/proofs/Manage
- Click 'Add another way to sign in to your account'.
- Add another recovery email address or authenticator app first.
- Then, remove your email address.
Once done, your new security info will be updated.
However, if you don't have access to that email to verify your identity,
Select I don't have any of these on the Verify Your Identity screen, 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.