This error may be caused by recently receiving a system update while using a router with an SPI firewall. This firewall may be incompatible with the Wii console.


To solve this error :

Wait for a future system update that will solve this issue.

Please wait and try again as Nintendo's servers may be busy.

Check your Wii internet connection settings to ensure they are correct.

Unfortunately, certain routers and internet service providers may be incompatible with the ability of the Wii to connect online.