I've forgotten the password for my Nintendo Account. What should I do?
If you use a password to sign in to your Nintendo Account and you've forgotten it, you can reset it here.
If you use an external social networking service to sign in to your Nintendo Account, your login details can be recovered through that service.
If your Nintendo Account is linked to a Nintendo Network ID, you will need the password for that NNID. If you've forgotten the NNID password, you can recover it here.