well, I've been trying to connect to WFC with no success... Using only the DNS patch on a original cart, or even on a copy (R4), the game hangs up when connecting.

In Mario Kart DS, joining a room that was already created isn't possible, so the only way to get into a game with someone is when they are searching at the same time as you. There aren't so many players playing Mario Kart DS so finding someone might take some time.
If you get error code 86420 after a while matchmaking doesn't work with your NAT type.


This is a Wiimmfi error, it happens if you have someone in your friend list who never connected to Wiimmfi yet. This includes people you played with locally.
You will have to delete them or wait until it gets fixed (although it will probably take some time).

Hi, i have the exact same problem even when there are people listed on the Wiimmfi website it gives me a error code 85020
any solution guys