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  1. Minecraft: Java Edition
  2. MC-268452

I keep getting disconnected from a server

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    • Icon: Bug Bug
    • Resolution: Invalid
    • None
    • 1.20.4
    • Unconfirmed
    • (Unassigned)

      I keep getting kicked from a minecraft server I play on with one of the following messages:

      Internal Exception: io.netty.handler.codec.DecoderException: java.util.zip.DataFormatException: incorrect header
      check

      Internal Exception: io.netty.handler.codec.DecoderException: java.io.IOException: Packet 0/10 (ClientboundBlockUpdatePacket) was larger than I expected, found 75 bytes extra whilst reading packet 10

      Internal Exception: io.netty.handler.codec.DecoderException: java.io.IOException: Packet 0/0 (BundleDelimiterFacket) was larger than I expected, found 112 bytes extra whilst reading packet 0

      Internal Exception: io.netty.handler.codec.CorruptedFramException: length wider than 21-bit

      Sometimes I get other messages but they all are along those lines.

      So whenever I enter the server, I'd get kicked out after some time, it can be after 10seconds or after half an hour. The  problem is happening only on my PC, I tested playing on both of my laptops, on the same server, with the same minecraft and java version, connected to the same WiFi, and the problem isn't there and I can play normally, also, I could play on the same server with this PC exactly a year ago with no problems. I haven't seen anyone else having this problem on the server (or it's rare). 
      Some things i've already tried:

      -updated all the drivers

      -turned off VPN

      -reinstalled both Minecraft and Java

      -tried different versions

      -updated windows

      -enabled java and minecraft through my firewall

      -disabled antivirus and firewall

      -deleted all the mods

      -tested internet connection and it's stable, no packet loss

      If it's of any help, I play on a OneBlock subserver on that server, and I noticed that there are some areas that I get kicked more often than others, there are parts I almost never got kicked out whilst being there, it's like if there are more things happening near me, the chance is bigger for me to get kicked out. Also what I noticed is that if I Alt-Tab and use internet while I'm on the server, the chance is higher for me to get kicked out.

      I've seen people here crashing their minecraft manually and posting the text file so I'm going to do it to lol, here it is:

      https://textsaver.flap.tv/lists/6apx
       

            Unassigned Unassigned
            dooole dooole
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              Created:
              Updated:
              Resolved: