Error Code: 2124-5002
You are unable to sign in to your Nintendo Account on Nintendo Switch and receive the error code 2124-5002.
This error indicates that there is likely a temporary service outage related to Nintendo Accounts.
What to Do:
Wait a while and try again later.
Situation Not Resolved:
If the issue persists, visit https://www.nintendo.co.jp/netinfo/en_GB/index.html and check for any posted service maintenance or outages.
If there is no maintenance or outage posted, and you have experienced this issue for an extended amount of time, please contact our Customer Support.