According to what has been mentioned on their official website, you might be seeing the following Wii U Error Code 101-0502 message, as a result of some services being blocked or restricted on your devices.
Usually, when playing online if certain features related to your Friend’s service gets blocked. Then too, such an error can occur as well.
Hence, it is very important that you have any such services or apps that might be responsible for blocking such features from your friend’s system. Then, it would be a good idea to disable such services or apps to allow such features and possibly fix the following error.
Fixes For Wii U Error Code 101-0502
Fix 1: Check server status
Checking the server status should definitely be the first and foremost thing to try when dealing with a network error of any kind.
Doing so, gives you a clear idea of whether the problem is at the server end or the client end.
Hence, if it is a server issue and the servers are down or under maintenance. Then, there is nothing much you can do at your end to fix the issue. But, just wait it out till the developer takes care of it on the server side itself.
However, if the servers are up and running fine. Then, there is a possibility that the problem causing the error might be at your end. And in such cases, you can try and troubleshoot the error by following the steps as shown below.
Fix 2: Power Cycle your Devices
Power cycling your devices is one of the easiest and simplest of the troubleshoot methods out there with the help of which you might be able to solve the following error.
Here, all you need to do is simply turn off all your devices for a few minutes. And then, switch them back on to see if that helps fix the issue.
Fix 3: Troubleshoot NAT issuesÂ
If the problem lies in the NAT (Nintendo Address Technology) system. Then, it would be a good idea to troubleshoot your NAT issues as have been shown by Nintendo here and see if that helps fix the problem.
Fix 4: Try Port Forwarding
Port forwarding has been mentioned by their official website to help fix the issue. Hence, you can give it a try by following the steps as mentioned in the following guide, and check if it helps fix the issue for you.
Fix 5: Configure Router DMZÂ
The DMZ or Demilitarized feature on your routers basically allows you to open a different channel or internet network from your internal network, to allow you to gain complete access to your network by disabling any firewall services available on the network.
Although, this enhances the performance of your network and lets you play or access features without any difficulty. It can however compromise the security and safety of your network if disabled.
Hence, it is always important to keep in mind that if you disable the DMZ feature for any reason. Enable it whenever disabling it is not required.
To learn more about how to configure your router DMZ feature. You can refer to the following guide here.
Fix 6: Update your firmware
Updating your console might also help solve the issue if the error is being caused as a result of an outdated system firmware.
Thus, you can try updating your console’s firmware and check if doing so helps with the error.
Fix 7: Contact Customer Support
If none of the solutions as mentioned above work for you. Then, it would be best to directly contact Nintendo’s Customer Support and discuss the issue with them.
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