I don't know anything about multiplayer, but could Minecraft be inadvertently checking to see if you have an active Nintendo Switch Online Membership when trying to connect to a LAN world?
Still here kinda, only it is the other way around in 1.17.40
xXLarryTFVWXx
I don't know anything about multiplayer, but could Minecraft be inadvertently checking to see if you have an active Nintendo Switch Online Membership when trying to connect to a LAN world?