Just got my Wii U back from being repaired today. Power it up, everything is looking good. Go to the eShop and download Sonic Racing. Go back to the eShop and I get this error. I've tried to do everything, like powering it down. Same with the router and modem. But no luck.
Someone else on the IGN forums had the same problem after getting a repaired system. If this doesn't get fixed, I have no idea what I'm going to do. I feel sorry for the customer service rep who answers my call.