How do I install Block Limit Fix?

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. Opens on CurseForge — not every file is mirrored on our own servers.

What Minecraft version does Block Limit Fix work with?

The listing gives Minecraft 1.17.1, 1.19.3, 1.18.2, among others. This is the version stated by the author or source site, not something we verified ourselves.

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Block Limit Fix

Java mod listed for Minecraft 1.16–1.19. Downloads from the MC Java Mods app on Android.

by tropheusj · on CurseForge

Which build do you need?

This mod ships a separate file for every mod loader and every version of the game. Pick both, then download — the wrong build installs fine and then does nothing in the game.

Mod loader

Mod loader Fabric2 builds
Mod loader Forge2 builds
Mod loader Quilt2 builds

Minecraft version

Minecraft 1.17.1–1.19.3Newest
Minecraft 1.16.5

Minecraft 1.17.1–1.19.3Newest
Minecraft 1.16.5

Minecraft 1.17.1–1.19.3Newest
Minecraft 1.16.5

⬇ Download for 1.17.1–1.19.3 · Fabric ⬇ Download for 1.16.5 · Fabric ⬇ Download for 1.17.1–1.19.3 · Forge ⬇ Download for 1.16.5 · Forge ⬇ Download for 1.17.1–1.19.3 · Quilt ⬇ Download for 1.16.5 · Quilt

I don't know my version or loader

Open the Minecraft launcher and look at the profile you play on — it names both, like fabric-loader-1.21.4. The version also shows in the bottom-right corner of the game's main menu.

No loader in the profile name? Then it's plain Minecraft, and these mods won't run — you need Fabric or NeoForge installed first.

Open in MC Java Mods Get it on Google Play →

Block Limit Fix
This mod fixes a vanilla bug that occurs when there's roughly 500k unique Blockstates. When this bug is triggered, a range of issues can occur from ghost blocks to desyncs.

Specifically, beyond 524288 states, the math for serializing the states to packets breaks down due to a misplaced cast. This bug is fixed in 1.19.4 / 1.20, whichever comes first. This mod backports it to older versions.

Thanks to Patbox for debugging this and figuring out the solution.

Quick facts

Edition: Minecraft Java
File type: .jar
Minecraft versions listed: 1.17.1, 1.19.3, 1.18.2
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 CurseForge — 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.

File checked by MCModsHub

Ships as block_limit_fix-1.0.5-fabric.jar — drop this file into the mods folder
Download size: 15 KB
Download link checked 25 Sept 2026 — working

These come from our own check of the pack file, not from the source page.

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