About Packet Fixer
From ModrinthA simple mod to fix various problems with packets, nbt and timeouts.
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
Highlights
From source dataGame versions
Supports 38 Minecraft versions, the newest being 26.3.
Loaders
Runs on Fabric, Forge, NeoForge and Quilt.
Footprint
Rated a light load on a server.
Packet Fixer on Nxeon
From our catalogue- One-click install
- Supported on Nxeon Minecraft servers. We download it from Modrinth, place it, and restart the server.
- Server side
- Optional on the server
- Server type needed
- Fabric, Forge, NeoForge, Quilt
- Server load
- light
- Smallest plan we suggest
- Minecraft — 2 GB (2 GB RAM). This follows our own load rating above, not a benchmark.
- Latest build
- 3.3.7, released 2026-09-20
Game versions by loader
| Loader | Game versions | Newest |
|---|---|---|
| Fabric | 26.2 to 26.3 (2 versions) | 26.3 |
| NeoForge | 26.2 to 26.3 (2 versions) | 26.3 |
| Quilt | 26.2 to 26.3 (2 versions) | 26.3 |
From 5 recorded builds of Packet Fixer.
Recent builds
| Build | Released | Game versions | Loaders |
|---|---|---|---|
| 3.3.7 | 2026-09-20 | 26.3 | NeoForge |
| 3.3.6 | 2026-09-15 | 26.3 | Fabric, Quilt |
| 3.3.6 | 2026-09-15 | 26.3 | NeoForge |
| 3.3.6 | 2026-07-16 | 26.2 | Fabric, Quilt |
| 3.3.6 | 2026-07-16 | 26.2 | NeoForge |
Run Packet Fixer on a Minecraft server
Pick a server or deploy a new one above; it is installed in one click.
What kind of mod it is
From the catalogListed on Modrinth as “Mods”
Gameplay & overhauls
New mechanics, content and overhauls that change how the game plays.
Works on a server
From source side supportModrinth lists server-side support for Packet Fixer as optional: it can run on a server, but isn’t required there.
Compatibility
- Game
- Minecraft
- Loaders
- FabricForgeNeoForgeQuilt
- Runs on
- Serveroptional on the server
- Game versions
- 26.3 and 37 earlier
Verified at the source
- ✓ModrinthOfficial listing, checked 2026-10-01Open ↗
- ✓AuthorTonimatasDEV, as published on Modrinth
- ✓LicenseMITFree
