Packet Fixer

Packet Fixer

A simple mod to fix various problems with packets, nbt and timeouts.

by
26.8M Downloads
fabricforgeneoforgequiltoptimizationutility
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About this Mod

Packet Fixer

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Description

This mod increases the packet sizes to prevent various package 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

Feel free to use this mod on your modpack

Available Versions

Packet Fixer 3.3.6release
MC 26.2fabric, quilt
July 16, 2026
Packet Fixer 3.3.6release
MC 26.2neoforge
July 16, 2026
Packet Fixer 3.3.5release
MC 26.2fabric, quilt
June 17, 2026
Packet Fixer 3.3.5release
MC 26.2neoforge
June 17, 2026
Packet Fixer 3.3.5release
MC 1.21.9, 1.21.10, 1.21.11fabric, quilt
April 22, 2026

How to Install Packet Fixer on Your Server

1

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

2

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (26.2).

3

Install Mod

Open the mod browser in the dashboard and search for "Packet Fixer". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabricforgeneoforgequilt

Minecraft Versions

26.2, 26.1.2, 26.1.1 (+34 more)

Server-side

~ Optional

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Packet Fixer server crashes on startup – what to do?

Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (26.2). You can switch loaders with one click in the panel.

Is Packet Fixer compatible with fabric and forge and neoforge and quilt?

Packet Fixer officially supports fabric, forge, neoforge, quilt for Minecraft 26.2, 26.1.2, 26.1.1. Note: Forge and Fabric mods are NOT cross-compatible – pick one loader and stick with it. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Packet Fixer – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Packet Fixer consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.

Rent Modded Server

Install Packet Fixer with just one click on your server.

Recommended RAM
4 GBfrom €5.2/mo
Minimum 3 GB | per 8 players
Create Server Now
1-Click Mod Install
NVMe SSD Storage
DDoS Protection included

Details

License
MIT License
Server-side
Optional

Supported Versions

26.226.1.226.1.126.11.21.111.21.101.21.91.21.81.21.71.21.6+27 more