Description:

This error occurs when there is a connection issue between your computer and our servers.

Before testing anything, check the status of our servers here. If the servers are offline, simply wait for them to come back online, then try to log in again.
If our servers are online and you still get the same error, try the solutions below.

First Solution:
Before doing the following steps below restart your internet router.

• Open a command prompt as an administrator
• Type the following commands in the exact order that they are in
  

ipconfig/release
ipconfig/renew
ipconfig/flushdns

Second solution:

• Check if you have the right version of the game.

Third solution:

• This error may appear because your operating system is not up to date. Try again after updating it.