Error Code: 86420
This particular error is typically caused by a firewall interfering with a successful connection to the Nintendo WFC. Please read the following information.
Do you receive this error every time you try and connect?
If you receive this error every time, please proceed to step #2 on this page.
If you receive this error only when playing a particular friend, then it is likely a problem with the friend�s firewall settings on their connection. If possible, recommend to your friend that they visit the technical support area of
http://www.nintendowifi.com for possible solutions.
Ensure your router has the latest firmware installed. Visit your router manufacturer’s website and look for any updated firmware that may be available (these are typically found under "downloads" or by searching for your particular model number). Contact your router manufacturer for additional assistance.
Another device may be sharing the same I.P. address of the DS. Try manually assigning an IP address to your Nintendo DS.
First, assign a static I.P. address to your Nintendo DS. To do this:
Click the "Start" button in the lower left-hand corner of your computer.
Click "Run."
Type "cmd" into the box and press Enter.
Type "IPCONFIG/ALL" and press Enter. The IP address of the PC will be displayed.
The IP address you going to assign to the Nintendo DS must be 10 digits higher than the PC�s. (e.g., 192.168.1.100 becomes 192.168.1.110)
You will now need to manually assign this new IP address to your Nintendo DS. For step-by-step instructions on how to do this, please click here.
If the above information does not solve your problem, you may consider adjusting your router's Port Forwarding settings*. Each router is unique, so consult the owner's manual for your router or contact the manufacturer for specific information on working with your router's ports. For your information:
If you are prompted for a device or profile name, you can enter anything you like (such as Nintendo DS, etc.).
The starting port to open is 1, the ending port to open is 65535 (or as high as the router will allow).
Protocols will need to be set to UPD only.
Set the IP address for the ports to forward to the same as the DS�s static IP that you assigned in the previous step on this page.
If you are still unable to connect, please call 1-800-255-3700 in the USA or Canada for more information.
*While Nintendo provides this information for our consumers' use, it is up to each consumer to determine what security needs they have for their own networks, and to decide how best to configure their network settings to meet those needs.