Portalfarm Despawn Fix
A micro-mod for Fabric that fixes a common issue where mobs transported through nether portals on multiplayer servers would immediately despawn when there are players in the destination dimension. This mod prevents mobs from despawning in portal farms by setting an upper bound to the despawning check.
Vanilla behaviour:
Mobs that are x blocks away from a player despawn immediately
Adjusted behaviour:
Mobs that are x blocks away, and less than x * 1.5 blocks away despawn immediately
Notes:
- To preserve compatibility, the mod will occasionally do a distance check twice (will not matter for 99.9% of players)
- The mod does nothing on singleplayer, or when there are no other players online on your server
- While the mods name contains portal, this mod does not alter portal mechanics in any way. It is named this because it fixes a mechanic most commonly seen when using portal based farms
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21.9, 1.21.10, 1.21.11
- 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.
Verified by MCModsHub
- Ships as portalfarm-despawn-fix-1.0.0.jar — drop this file into the mods folder
- Download size: 16 KB
- Download link checked 7 Sept 2026 — working
These come from our own check of the pack file, not from the source page.