I cannot gain access ro Microsoft as it is showing my old e-mail address of *** Email address is removed for privacy *** This is now defunct and has been for over 2 years

My new e-mail is *** Email address is removed for privacy ***

Thought I had solved this when I actually managed to get this far - but when I went to download an app, it quoted my old address

How can I get rid of this and set up under my current e-mail address