tried to sign in had to update email and pass for security proof . got code 80072ef3 . read forums with same problem . a chack person had the answer to delete gamer profile . I tried . would not delete.
Hey pal, if you received the security prompt there's a good chance you need to update your security proofs. If you follow this link and click 'Manage your security info' and sign-in you will be able to add and verify your proofs:
After that try deleting your profile from the console (profile only), clear the system cache 3 times. Restart the console and re-download your profile.