How to Link or Unlink a Nintendo Network ID to a Nintendo Account
Instructions on linking or unlinking a Nintendo Network ID (NNID) and a Nintendo Account.
Notes:
If you need help using your NNID to create a new Nintendo Account, click here.
Complete These Steps:
Do you want to link a new NNID or unlink an existing NNID from your Nintendo Account?
How do you want to link your NNID to your Nintendo Account?
Go to the Nintendo Account website and sign in to the Nintendo Account that is linked to the NNID you want to unlink.
Select Your Info, then select Change in the "Linked Apps and Services" section to view the accounts that are currently linked to your Nintendo Account.
In the "Linked Accounts" section, select Change.
Select the box next to "Nintendo Network ID" to unlink the account.
Nintendo Account Mii disappeared: When your NNID is unlinked, your Mii will no longer be displayed. If you would like to add a new Mii, read How to Change a Nintendo Account Mii.