I get this error code when trying to access the Online Rank scores in Nano Assault Neo.
Sometimes the scores will load in, but then quickly disapear giving me the error code. Most of the time scores don't load at all, just saying "No Data Available", then the error code.
I contacted Shin'en, the makers of the game who told me the code means "Unexpected error: Operation aborted".
They said it's not an issue with the game but with the internet/server side of things.
I've not seen a single person on the internet report this error code before. only me.
I have no problems with the internet on my Wii U at all other than this; I downloaded updates, access the miiverse, downloaded games off the eShop, browse the web - all this with no problems at all.
I have a Netgear WRN1000, the firewall is disabled. I've tried with automatic settings and also set up a connection with manual settings. My Wii U is 3 feet away from the router.
I even tried uninstalling the game and redownloading it from the eShop, that didn't work either.
I think I've ran out of things to try.