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@phit
Last active February 7, 2022 02:46
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Updating netty manually for Minecraft 1.12

Get your minecraft_server.1.12.2.jar from the root of your server, download the latest netty 4 full package https://netty.io/downloads.html

Open your server jar with 7zip and navigate to minecraft_server.1.12.2.jar\io\netty\

open the netty package you downloaded and go to netty-4.1.70.Final.tar.gz\netty-4.1.70.Final.tar\netty-4.1.70.Final\jar\all-in-one\netty-all-4.1.70.Final.jar\io\netty\

back in the minecraft server jar delete these 6 folders

now simple copy the same 6 folders from the netty package into the minecraft jar

throw the jar back into the root of your server and you are done!

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ghost commented Sep 16, 2020

Caused by: java.lang.NoClassDefFoundError: org/apache/logging/log4j/Level

try reinstalling forge..

@DesolateIntention
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What do you mean.

@Dr4gulaa
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Dr4gulaa commented Feb 2, 2021

i actualized and get thats again
https://pastebin.com/0fjyZ2WZ

@GewoonJoey
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The link with the netty download does not work for me. It takes me to a blank page which only says "Forbidden".

Is there any other link I can use to get the right netty version. I tried downloading it from https://github.com/netty/netty/releases/tag/netty-4.1.37.Final but there I was not able to locate the right file I needed.

@joaco1808
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hello! when I enter the netty file I do not get the 6 files to replace

@PillowOfBricks
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For anyone struggling to find the jar folder, the latest versions do not have it for some reason... If you grab 4.1.27 on https://javalibs.com/artifact/io.netty/netty-all, you can follow the steps normally; if you don't want that old of a version, you can go up to v68 before the jar portion disappears

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