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DupeFix - New Gen Dupe Detections

Protect your server against raids & dupes

5(1 reviews)Updated Sep 20, 2026
DupeFix - New Gen Dupe Detections Minecraft resource thumbnail

About the DupeFix - New Gen Dupe Detections

Duplication glitches can ruin months of player economy progress in just a single afternoon. DupeFix patches known modern exploits across Paper, Purpur, and Spigot without restricting vanilla survival mechanics.

Fixes notorious piston-shulker breaking bugs, portal inventory desyncs, donkey/llama chunk unload exploits, and crafting table drop dupes.

Runs completely server-side with zero noticeable TPS impact and includes real-time staff alerts whenever an exploit attempt is blocked.

Key features

Piston & Shulker Exploit Fix

Prevents breaking shulker boxes with pistons to duplicate their internal item contents.

Portal Entity Desync Patch

Stops players from disconnecting inside nether portals with rideable chests to clone inventory.

Crafting & Drop Check

Blocks packet injection exploits aimed at fast crafting and rapid drop desynchronization.

Real-Time Staff Alerts

Notifies online administrators immediately with coordinates when someone attempts a patched dupe.

What's included

  • Complete plugin JAR / configuration files
  • Ready-to-use default setups and templates
  • Setup & installation documentation
  • Direct Discord and BuiltByBit support
  • Lifetime updates

Requirements

  • Paper, Purpur or Spigot
  • Minecraft 1.20.x – 1.21.x
  • Java 17 or Java 21 recommended

DupeFix - New Gen Dupe Detections FAQ

Which Minecraft versions are supported?

This resource is actively maintained and tested for 1.20.x – 1.21.x.

Do I get lifetime updates?

Yes! Every purchase includes free access to all future updates and version upgrades on BuiltByBit.

Can I customize the messages and configuration?

Absolutely. All configuration files are clean, non-obfuscated, and easy to edit.

How do I get support?

Support is provided through our official Discord community and BuiltByBit direct messages.

Changelog

  1. v1.0.0Sep 20, 2026

    Initial release with full 1.21.x support and performance optimizations.

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