On the Microsoft account sign-in page, enter your email address and password.
On the Help us protect your account page, tap or click Use a different verification option.
If all your alternate contact info is out of date, choose I don't have these any more from the drop-down list, and then tap or click Next.
In the I don't have my security info any more page, tap or click Next, and then follow the instructions to add and verify your current contact info.