Aternos – Solution for the error: io.netty.handler.DecoderException: java.lang.IndexOutOfBoundsException: Index: 25, Size: 5
In this article we will give you the solution to the following Minecraft bug: Internal Exception: io.netty.handler.DecoderException: java.lang.IndexOutOfBoundsException: Index: 25, Size: 5
This error usually occurs when playing in multiplayer servers and the steps to solve it are the following:
1- The first thing to do is to go to your web browser, either Google Chrome, Mozilla or whatever you prefer and there we go to the “TLauncher” page. For your convenience here is the link to the official site.
2- Once here in the official site of “TLauncher” we must create a new account, because the error “Internal Exception: io.netty.handler.DecoderException: java.lang.IndexOutOfBoundsException: Index: 25, Size: 5” is an error in the account and has nothing to do with your computer or the installation of the game or its configuration. To create a new account you must look for the “Sign Up” button. You must enter a new email and a new password for this second account.You should choose a name that is not too long, as many users also have this problem when the username is too long.
3- Once the new account is created, you only have to open again the “TLauncher” to add the new account, just created. To add a new account you must go to the section that says accounts as shown in the following image.
Add the newly created account and the corresponding password. Save the username and start playing with the new account as the internal exception error will be fixed and you will be able to play in multiplayer mode.
Some users in addition to this step must enter the Aternos page and in “Whitelist” add you to the list of players, for this add the user name of the new account created.