The simple 303 error message...
Basically, when this message shows up, it means it cannot find the file you are trying to look for. Either it no longer exists, or it has been moved.
To solve it, either manually find the file, or somehow skip the need for using the missing one.
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Unidentified. I had the same issue. Then I linked my Club Nintendo account to my Wii and it let me download it.
I dont understand why this error is comming up now i never had a problem before
The Error Code number 20100 means that you can no longer connect to the internet using Wii games in the event of you attempting to connect after May 20, 2014 since the service that held the Nintendo Wi-Fi servers is no longer active.
yes make sure that it is the right type of onnection for example wep,wpa tkip there are more.