You are unable to connect to an online service and you receive the error code 2306-0811.
If you are receiving this error code, it likely indicates the service you are attempting to use is undergoing maintenance.
What to Do:
Review support.nintendo.com/networkstatus for the most up-to-date maintenance and server status information, and then try again after the posted maintenance has ended.
Situation Not Resolved:
If the error persists, and there is no notice of maintenance, wait a while and try again later.
If you would like further assistance with the Nintendo Switch console, please contact Nintendo Customer Service.