DupeGuard - Item duplication glitch blocker

By Areed-Elahi Published 12 Jan 2026 · Updated 12 Jun 2026

3.3k

2.9

Select version for changelog:

Changelog

Better bundle detection

stopping the portal item throw glitch

stopped the tnt and chest glitch

made the dropper and dispensor detection work with pistons

also tried to fix the crafting table dupe, tho this is experimental

fixed a few other bugs

Downloads

dupeguard-1.5.0-26.10+.mcpack (60.32 KB)

Show all downloads (2 older files)

Supported Minecraft versions

Installation Guides

Plast April 06, 2026 at 9:37 pm

im not sure but it might me a spam bot addon or another one not this one... iv recently got spam bot. crashing my realm so idk

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sahilsourav4u March 30, 2026 at 10:52 pm

Hello! First of all this is a very good addon, though I can recommend some things.
1) can you make the bundle, so that it drops instead of disappearing. We use bundles to manage our inventory. So we don't want it to gets atomized when we accidentally put it in a container.
2) I'd like to ask how does the piston push thing works? We could still get a hopper loop using normal piston?

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zaidvbrave February 27, 2026 at 5:47 pm

Lol I duped with 4anti dupes with this anti the dropper and the hopper

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CunningTutong January 25, 2026 at 9:55 am

Hi, the addon is really great but, chat spam of the anti dupe can be seen by everybody else and everyone can use the command to disable everything

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Areed Elahi January 25, 2026 at 9:59 am

I included one chat message just for the inventory duping to be sure it detected it.

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fusion26 January 24, 2026 at 11:09 pm

Thank you for the update!! I do think there is another dupe glitch that exists that uses chests.

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fusion26 January 24, 2026 at 11:19 pm

It's not letting me add the mod to my realm

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Areed Elahi January 25, 2026 at 9:59 am

Explain the chest glitch, and for realms, its not possible for it to lot let you add it. Packs cannot stop themselves from being used on realms. Only thing is they might not work after heing applied, but this one works.

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fusion26 January 20, 2026 at 10:09 am

There is another dupe glitch using hopppers/dispensers.

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