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Arknights Error Code 400 [How to Fix 2024]

Arknights Error Code 400 [How to Fix 2024]

Arknights Error Code 400: Arknights is a popular mobile and PC game that combines elements of tower defense and strategy with a rich narrative and gacha game mechanics. In the game, players assemble a team of operators with unique abilities to defend against waves of enemies in various tactical scenarios.

However, an issue that has frustrated players is Arknights Error Code 400, which occurs when attempting to log into the game.

To help you overcome this issue, we've compiled a list of potential solutions based on our research, aiming to get you back into the world of Arknights.

What is Arknights Error Code 400?

Arknights Error Code 400 is a common issue you encounter when attempting to log into the game. When it appears, you can't get into the game, and you'll see a message saying, “Identity information synchronization failed. Please try again.”

This error is often because of two main reasons:

  • Server error
  • Under maintenance

How to Fix: Arknights Error Code 400

To fix Arknights Error Code 400, you can try these steps.

Wait For a While 

If you encounter Error Code 400, it might be due to server issues or maintenance. In such cases, It's advisable to exercise patience. 

Arknights' servers may be temporarily down for maintenance or experiencing problems, so give it some time, usually a few hours, and try logging in again later.

Restart the App

Sometimes, the error may be a temporary glitch. To fix this, simply close the Arknights app and restart it. This can clear any temporary issues that may be causing the error.

Try Different DNS 

If the error persists, you can attempt to use a different DNS. DNS is like the internet's address book, and sometimes changing it can help resolve connection issues. You can use services like Google DNS or Cloudflare DNS. 

If you're not sure how to change your DNS settings, you can refer to this guide.

Use VPN 

If changing your DNS doesn't work, consider using a VPN. A VPN can make it seem like you're connecting from a different region. This can help confirm whether the issue is limited to your location or affecting all players.

By connecting through a VPN, you might be able to access the game if the problem is specific to your region.

Contact Arknights

If none of the above solutions works, you can contact to Arknights' official support. You can often find them on social media platforms like Twitter. They may provide information or assistance regarding the ongoing issue, or they might be able to guide you on how to resolve it.


What is Arknights Error Code 400?

Arknights Error Code 400 is a common issue that occurs when you try to log into the game. It prevents you from accessing the game's content.

What are the common reasons for Arknights Error Code 400?

The error is commonly attributed to two main causes: server problems or the game being under maintenance.

How to fix Arknights Error Code 400?

Try restarting the Arknights app or using a different DNS server like Google DNS or Cloudflare DNS. If the error persists, you can try using a VPN or contacting Arknights support for help.