Packet Fixer

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

ABOUT THIS LISTING

This page describes Packet Fixer by TonimatasDEV. The description and screenshots are the author's own, imported from their listing on Modrinth on 3 October 2026: https://modrinth.com/mod/packet-fixer

Mythiq.net hosts no files for it. The download button goes straight to the release file on cdn.modrinth.com, so you are downloading from the author's own host, not from a copy of ours.

The download count, rating and comments on this page start at zero and count Mythiq.net only. The source's own figures are not copied here — they measure a different site, and a number that cannot be checked against our own ledger is not worth printing.

MOD LOADER

This release is built for Neoforge. A mod built for one loader will not load under another — Fabric mods do not run on Forge, and vice versa.

GAME VERSION

Built for Minecraft 26.3. Minecraft mods are tied to an exact version: a 1.21.4 build will refuse to load on 1.21.5.

DEPENDENCIES

Check the author's listing for required libraries before you start the game — a missing dependency shows up as a crash on launch, not as a warning.

1. Install Neoforge for the Minecraft version you play, if you have not already.

2. Download the .jar with the button on this page. Do not unzip it — a mod jar is installed as it is.

3. Put it in your mods folder:

Windows — %APPDATA%\.minecraft\mods

macOS — ~/Library/Application Support/minecraft/mods

Linux — ~/.minecraft/mods

4. Launch the game with the Neoforge profile selected.

ON A SERVER

Anything that changes world generation or gameplay has to be installed on the server as well as on every client. Client-side visual and interface mods do not.

UPDATING

Replace the old .jar rather than adding the new one beside it. Two versions of the same mod in the folder is a crash on launch.