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Packet Fixer

Mod

by TonimatasDEV

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

Type

Mod

CurseForge Downloads

116,023,640

CurseForge ID

689467

Modrinth Downloads

31,118,436

Modrinth ID

c7m1mi73

Last Updated

Nov 7, 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

Compatibility

Mod Loaders

Client Neoforge Server

Game Versions

26.3

Recommended Gear

Affiliate

Hardware and extras that pair well with this mod.

Mini PC for self-hosting

Mini PC for Self-Hosting

A low-power box that can sit in a cupboard and run a modded server around the clock.

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External Resources

CurseForge Modrinth Source Code Issues