I wants to delete primary email address from windows phone 10166 how to delete plz help me coz i have forget password and i am failed to recover password
You would have to Factory Reset your phone and start with a new set up. You will loose everything. Backups, OneDrive, OneNote, App ownerships, Contacts/Calendar/Tasks associated with that email address. Everything would be gone and you would be starting over from square 1.
But last time i have reset after resetting i have seen so many things missing dial pad and setting everything is missing then i have flash my phone and restore it again