Removing a mobile device number

Question

I need to change my former 2nd-step verification phone number to a new one but cannot find a way to do this.

Answer 1

Mind sharing what king of account you have? If it's an Microsoft 365 one, use this page: https://mysignins.microsoft.com/security-info

If you are using an "consumer" account instead, use: https://account.live.com/proofs/manage/additional