With more than 91 million players around the world, Minecraft, which was developed by Manjong in2011 is one of the most popular games around. With such a large number of players online, there are a number of crashes and problems due to the traffic. Like all other famous games, Minecraft also has online forums where the community playing the game come together not only to discuss various strategies, but also how to troubleshoot various problems in the game. Among the various problems, one of the most common error that occurs during the gameplay is Io.netty.channel.abstractchannel$annotatedconnectexception. This error occurs mostly when a player is trying to connect to a server. Once there is this error, there is no way around it then to fix it.

Io.netty.channel.abstractchannel$annotatedconnectexception

Causes of MineCraft Error

In order to fix the error, first you need to understand why it happens. There are number of reasons that might be responsible for this error. The first one is the issue in the IP address. The user might have entered an incorrect IP address in order to connect to the server. There may also be an issue regarding the wrong port as well. If any one of the above two things is not correct, you will not be able to establish a connection. IP addresses are of two types: static and dynamic. In case of a dynamic address, it continues to change because the same IP address might have been given to more than one user.

The Io.netty.channel.abstractchannel$annotatedconnectexception error might also occur due to a firewasll. The firewall on a windows will not let you connect to the server. Therefore, you will need to put the game as an exclusion for the firewall so that the firewall lets you establish the connection. 

Minecraft uses the latest version of Java, therefore, java must be updated whenever there is a new version. In case Java is not updated, there will be a number of issues during gameplay. You won’t be able to use various features of the game as well.

Another reason might be that the software of your device in incompatible with Minecraft. Therefore, in order to make sure that your computer is among the devices that are compatible with Minecraft, there is a list available online, which has been compiled by developers for all the software that are compatible with Minecraft.

Now that you know all the reasons why Io.netty.channel.abstractchannel$annotatedconnectexception error occurs, here are the possible solutions that you can use to get rid of this error.

How to fix the Error

Some of the methods that you can use to get rid of the problems that are mentioned in the list above are as follows:

Method 1: Reset the Router (Recommended)

The first thing that you need to do whenever something is wrong with either the internet connection, or your computer is to restart the router. Similarly, in order to fix the most common problems in Minecraft i-e. Io.netty.channel.abstractchannel$annotatedconnectexception, you should restart the modem. This problem does not occur for the Static IP users. Therefore, if you are using a dynamic IP address, follow the steps below to fix the issue.

  • Turn off the button on the router. Disconnect the power plug.
  • Wait for a few minutes.
  • Connect the power plug again and check if the game is working without any problems now.
Io.netty.channel.abstractchannel$annotatedconnectexception mine error
Connect plug in wall socket

Method 2: Add IP Address

As mentioned earlier, IP address is one of the main issues that are responsible for this error. Therefore, you can also add an IP address in addition to changing the port that you are using to connect to the server. Follow the steps mentioned below:

  • Go to Start Menu and search for ‘Command Prompt’.
  • Click on ‘Run as Administrator’.
Io.netty.channel.abstractchannel$annotatedconnectexception error for minecraft
Method 2: Add IP Address

Then, type the command ‘ipconfig’ and check your IP address.

Io.netty.channel.abstractchannel$annotatedconnectexception error ip address
check your IP address
  • Write down your IP address somewhere so that you do not forget it.
  • Then, go to Minecraft Servers Folder and then to Maxwell (some random numbers).
  • After that, go to Minecraft Server and locate Server Properties.
  • Note your Server Port. It can be different from different users.
  • After noting down all the information, go to Minecraft and then to Navigate.
  • After that, go to Play Multiplayer.
  • Select your server and click on it. Go to Edit.
  • No matter what the server name is, let it stay the same. Make sure the IP address and port number are the same that you noted earlier.
Io.netty.channel.abstractchannel$annotatedconnectexception
  • Then, click on Done and refresh the game.

You can fix the Io.netty.channel.abstractchannel$annotatedconnectexception error with the help of these methods. If the problem still persists, then it is not due to the IP address or the port.

Method 3: Add Minecraft in the Exclusion List in Firewall

As mentioned earlier, a firewall in the windows might be blocking Minecraft. Therefore, if you want to fix this issue, you will need to add an exception for Minecraft in the firewall. Follow the steps mentioned below:

  • Go to the Start menu and then to Settings.
  • In Settings, go to Updates and Security and then to Windows Security.
  • Find the option for Firewall & Network Protection and click on it.
  • Scroll down until you see the option for ‘Allow an app through Firewall’.
  • You can add the exception for any app here. Click here and then on Change Settings.
  • When you see a warning prompt, proceed by clicking on Yes.
  • Then, Click on Browse in the ‘Allow another app’ option.
  • Locate the game directory. Select the game directory and launcher.
  • Follow the same instructions and then select the directory where Minecraft servers are installed.
  • Go to the Maxwell folder and then to MinecraftServer folder.
  • Allow the Java executables in this folder just like you allowed the servers. There will be two executables and you have to allow both of them.
  • Follow the steps again and then select ‘Change’ instead of selecting ‘Allow another app’.
  • Scroll down until you see Java Platform SE Binary.
  • Check the Private and Public networks. This will allow them.
  • Now, go back to Minecraft launcher and see if you can connect to the server.

Conclusion

One of the methods that have been mentioned above will help you to solve the issue of Io.netty.channel.abstractchannel$annotatedconnectexception while playing Minecraft. In case that the error doesn’t go away even after you have used all the methods mentioned above, then you should download Reimage plus. This software removes all corrupt files that are present in the computer, which in turn helps in running the game smoothly. Therefore, we hope that with the help of the guide, you can solve your issue of Io.netty.channel.abstractchannel$annotatedconnectexception error.