BufferFix
Java mod listed for Minecraft 1.4. Downloads from the MC Java Mods app on Android.
⬇ Download on ModrinthThis server-side coremod fixes the disconnect.overflow error that players might get on some 1.4.7 servers, most often caused by having a large amount of machines in one location.
The cause of this problem is a check in Minecraft's TcpConnection.java#processReadPackets() method where the server checks the size of the send queue for the user. If the queue is larger than 2MB, the server will drop the player's connection. If a player joins a server in an area with a large number of machines, the send queue can easily exceed the 2MB limit, causing them to be disconnected.
This mod simply patches the server to increase the maximum queue size to 20MB.
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.4.7
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as bufferfix-1.0.jar — drop this file into the mods folder
- Download size: 4 KB
- Download link checked 29 Sept 2026 — working
These come from our own check of the pack file, not from the source page.