How to fix Minecraft 1.17 io.netty.channel.ConnectTimeoutException connection error?

How to fix Minecraft 1.17 io.netty.channel.ConnectTimeoutException connection error?

I know, you’ve been playing on the Minecraft servers with your friends with no problems for months and suddenly in the Minecraft 1.17 update you can’t connect anymore and you get the following error: “io.netty.channel.ConnectTimeoutException connection timed out“.

In this article we bring you the solution for the error “io.netty.channel.ConnectTimeoutException connection timed out” in Minecraft 1.17

fix solution «io.netty.channel.ConnectTimeoutException connection timed out» minecraft 1.17

Most Minecraft players encountered the error “io.netty.channel.ConnectTimeoutException connection timed out” when trying to connect to a cooperative game on the local Internet.

This behavior is quite typical when users have Internet connection problems.

Therefore, the first thing to do is to run the Internet troubleshooter, which can help to quickly resolve the “io.netty.channel.ConnectTimeoutException connection timed out” error. However, this is not necessarily the case, as there may be other causes for this error, such as a misconfigured firewall.

Solution 1: Allow Minecraft 1.17 in the Firewall

If your firewall settings are misconfigured, it can block your connection to the Minecraft 1.17 servers. Therefore, you should first make sure that the game can run without your intervention.

  • In the Windows search bar, type Control Panel and press Enter.
  • Go to the System and Security section
  • In Windows Defender Firewall, select Allow application through Windows Defender Firewall.
  • In the main window, select Change Settings
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  • Scroll down the list until you find all the Java (TM) Platform SE binary entries and check the Private and Public checkboxes.
  • Click OK and close the Control Panel.

Solution 2: Disable your anti-virus and turn off the VPN

Connection problems that cause the “io.netty.channel.ConnectTimeoutException connection timed out” error can sometimes be caused by applications that intercept your Internet connection (or prevent it altogether).

If you are using a non-integrated anti-virus program (i.e. a third-party program), you should temporarily disable it and see if this solves the problem. However, most anti-malware solutions cannot be disabled, and you may need to uninstall them completely:

  • Type Control Panel in the Windows search bar and press Enter.
  • Go to Programs > Uninstall a Program
  • Find your anti-virus, right click and then select Uninstall
  • Follow the on-screen instructions and then restart your computer.

error conection expired minecraft 1.17 update

If you are using a VPN, also make sure that you are not connected to it when you try to connect to Minecraft servers, as this could also be the cause of the error.

Solution 3: Restart your router.

By default, your Internet Service Provider (ISP) gives you a dynamic IP address, which means that it will change every time you restart your Internet connection (you can also use a static IP address, which in some cases can help resolve the “io.netty.channel.ConnectTimeoutException connection timed out” error). io.netty.channel.ConnectTimeoutException connection timed out. So it’s worth restarting the router and seeing if changing the IP address helps:

DO NOT press the Reset button to reset the router, as this will change the factory settings.

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Instead, simply unplug the power cord or disconnect the power cord from the device.

After doing so, wait at least 30 seconds before restarting the router.

Solution 4: Type the correct IPv4 address and port

  • Type CMD in the Windows Search.
  • Right-click on the command line result and select Run as administrator
  • In the new window, type the following command and press Enter:

ip config minecraft 1.17

Type your IPv4 address:

ip configuration minecraft 1.17

  • Now press Windows key + E to open File Explorer.
  • Go to the following location.
  • Right-click on the server.properties file and select Open with > Notepad.
  • Locate the Server Port entry and enter the following information (consisting of numbers).
  • Open Minecraft and open the Multiplayer option.
  • Click on the server you were previously unable to connect to and click Edit.
  • In the Address field, enter the previously displayed IPv4 address, then enter “:” and the port.
  • Click Done to restart the game.
  • Try connecting to the server again – the “io.netty.channel.ConnectTimeoutException connection timed out” error should no longer occur.
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