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Packet Fixer logo

Packet Fixer

Mod

by TonimatasDEV

A simple mod to solve various problems with packets, NBTs and timeouts.

Type

Mod

CurseForge Downloads

107,969,131

CurseForge ID

689467

Modrinth Downloads

28,077,918

Modrinth ID

c7m1mi73

Last Updated

Sep 10, 2026

Description

Packet Fixer

Visit my discord server: Link

Description

This mod increases the packet sizes to prevent various packets/NBTs erros. This mod could be used in mod packs for increasing the number of mods.

The mod is required in Client and Server sides.

Prevent these problems:

  • Tried to read NBT tag that was too big; tried to allocate: X bytes where max allowed: 2097152
  • Badly compressed packet - size of X is larger than protocol maximum of 2097152
  • Attempted to send packet over maximum protocol size: 8388608
  • Chunk Packet trying to allocate too much memory on read.
  • Packet too big (is X, should be less than 8388608)
  • Payload may not be larger than 1048576 bytes
  • Payload may not be larger than 32767 bytes
  • Packet too large: size X is over 8
  • Length wider than 21-bit
  • Unable to fit X into 3
  • Connection timeouts
  • VarLong too big
  • VarInt too big

Recipe, tag and another problems try Recipe Fixer

Used by (Not all):

Feel free to use this mod on your modpack

Recommended Gear

Affiliate

Hardware and extras that pair well with this mod.

LEGO Minecraft Set

LEGO Minecraft Set

Official sets that translate the building side of the game off-screen.

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As an Amazon Associate I earn from qualifying purchases.

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External Resources

CurseForge Modrinth Source Code Issues