Chaos Zero Nightmare patch error E21400 might be due to region lock. Here’s what you can do

It is hard to deny the odd appeal that anime-aesthetic games have. Genshin Impact, Wuthering Waves, Ananta, and many, many others only confirm our love to this distinct graphics style. It also appears that we just can’t get enough of them, as just recently a new title was released – Chaos Zero Nightmare. Not only was it not forgotten in the sea of similar productions, but it actually triumphed over App Store, being its most popular app for a while. With so many players waiting for it, it is not unexpected that some hiccups happened. There are fans who can’t get in due to E21400 “Patch error occurred.” fault message. Let’s analyze what it means and how to fix it.

Fixing error E21400 in Chaos Zero Nightmare

We went a long way from pointy and ugly 3D to being able to imitate Pixar’s graphics almost indistinguishably, like in the case of Kena Bridge of Spirits. However, most of us are more than happy with drawn-like characters straight from the world of manga. Chaos Zero Nightmare delivers in that field, yet can fall short when it comes to technicalities, as multiple players can’t get in due to E21400 “Patch error occurred.” message. There are some methods that you can put into play to fix it, so let’s explore them.

There are a couple of reasons why the E21400 error can appear. If you use PC, you should make sure to uninstall the playtest version of the client completely, and then install it using STOVE launcher, available via CZN official website. This error might be a result of an attempt to install the production too early, while it was not available for predownload just yet.

However, if you have tried to play on Android or iOS device, you might be in a pickle, as the game appears to be region locked. There is no official information about what regions are inaccessible, though it seems that multiple fans have issues with that matter.

If you would like to get connected with Chaos Zero Nightmare Community, there is no better way to do so than by going to its official Discord server. Although, if you are fine with only the most recent updates about the game, it’s a good idea to follow the CZN’s X or Instagram accounts. Have fun!

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