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Nintendo Switch Server Communication Error Fix

Here is how you can fix the Nintendo Switch server communication error on your device,

Came home to play on your favorite console but can’t seem to get the errors out of the way? One of the most common server issues that players have been facing is the “A Communication Error Occurred” and the error code “2-ARZNA-0001 to 2-ARZNA-0009“. If you too are facing any of these issues then this is the guide for you. Here is your guide to fixing the server communication error for Nintendo Switch.

How to Fix the Nintendo Switch Server Communication Error


Nintendo Switch: How To Fix The Server Communication Error

These server issues are caused for a number of reasons, by a faulty DNS server, slow internet, wireless interference, or even an unstable WiFi network. While the problems may be many, the solutions are few and easy to follow through with. You can easily fix the server issues by following these solutions:

  • Reboot your device
  • Check for server problems
  • Do a speed test
  • Get close to the router
  • Refresh your network equipment
  • Is there wireless interference?
  • Switch to another band


While some of these are easy enough to understand, here is a detailed explanation of how to go about the others. These should help get your Nintendo Switch server communication error-free and running smoothly again.

Check for Server Problems on Your Switch

If Nintendo is facing an issue on their side then you can go to their server status site. If there is an issue then you will have to wait for it to be resolved before you can play on your Switch again. And if there are no issues then proceed with the next solution.


Do a Speed Test on Your Nintendo Switch

Sometimes you could be facing an issue due to speed issues with your net. This could be for a variety of reasons, from a router being used by too many devices to just having a slow net day. To check what the issue may be, here is how you can check your internet speed on your Nintendo Switch itself.

  • Turn on your device
  • Now, go to your Home Screen
  • Select Internet
  • Tap on Test Connection


The system will now run a speed test. You will now be able to see the download speed of your device. If your connection speed is lower than 5Mbps, you will face issues when playing your favorite games. In this case, you will need to disconnect some of the devices that are connected to the net. The more, the better. Even though this may be difficult to do if there are more than one of you in the same place and using the WiFi for each one’s needs.

Refresh Your Network Equipment

This solution looks at refreshing your modem or any of your other devices in the network that are providing internet services to your devices. Turn your router on and off to see if that will refresh your net.

Is There Wireless Interference?

The further your device is from the router, the worse the network will be. There could be wireless interference coming from other objects coming in the way as well. Some of these are walls, doors, and rain. To work on this issue, you could just move closer to the router and away from the objects coming in the way of your gaming experience.

Switch to Another Band

You may have a dual-band router that supports two bandwidths at the same time. If you can switch to one that is at 5GHz. This should fix the server communication error that you are facing while gaming.

This was our Nintendo Switch guide on how to fix the “A Communication Error Occurred” and the “2-ARZNA-0001 to 2-ARZNA-0009” error codes on your Nintendo Switch. For more Nintendo Switch articles, check out this one on how to beat Undyne the Undying in Undertale.