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  1. Minecraft: Java Edition
  2. MC-265798

The error: "Internal Exception: io.netty.handler.codec.DecoderException:java.util.zip.DataFormatException: incorrect header check" is posing a consistent problem.

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    • Icon: Bug Bug
    • Resolution: Invalid
    • None
    • 1.20.2
    • None
    • I am using:
        -Java 17.0.8
        -Normal Minecraft launcher
        -No mods/Optifine
    • Unconfirmed
    • (Unassigned)

      The message appears every time that I try to enter a Minecraft server on multiplayer, but it is actually on version 1.20.1. I have tried turning my render distance to 2 (older recommendation), resetting the game and my launcher. Later I would take my account off of the launcher and add it back on to no prevail. I have seen other posts about this problem but much older versions (1.10/1.13) but no solution for nowadays.

      Any help is appreciated!
      Thanks.

            Unassigned Unassigned
            mr_anyomase mr_anyomase
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              Created:
              Updated:
              Resolved: