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unknown_file.jarMinecraft mod

It's me.

client and server
Latest version
0.1.8
Minecraft
no version declared
Java
follows the game
Loaders
none declared
Licence
MIT
Downloads
1.7k
Updated
5 mo ago
Available on
Modrinth
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One click and unknown_file.jar is installed with the right loader, on hardware built for it.

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Download

From unknown_file.jar’s own host. Nothing is re-hosted here.

Most recently published release

0.1.8beta3 Jun 2026

errjava_file_unknown-0.1.8-neoforge-1.21.1.jar · 143.2 MB · for 1.21.1 · NeoForge

Download this release
b9c03870b43e…
Older versions8
  • 0.1.730 May 20261.21.1179.8 MB75 downloadsb1bb8ff6aad5…Get
  • 0.1.628 May 20261.21.1179.8 MB18 downloads681d9dd15279…Get
  • 0.1.519 May 20261.21.1172.7 MB75 downloadsde0ac0a893fe…Get
  • 0.1.425 Feb 20261.21.1144.8 MB926 downloads94049d4dcf20…Get
  • 0.1.322 Feb 20261.21.1142.1 MB35 downloadsb8ffd58837c1…Get
  • 0.1.215 Feb 20261.21.1136.8 MB38 downloads20db284067bd…Get
  • 0.1.111 Feb 20261.21.1135.1 MB71 downloads72e6ef2121ec…Get
  • 0.1.010 Feb 20261.21.1135.1 MB27 downloads08c1618a8bed…Get

Frequently asked

Do I need to install unknown_file.jar on the client or the server?

Both. Every player needs it installed and so does the server, so anyone joining without it will be refused.

What licence is unknown_file.jar under?

MIT, as stated by the author on the platform we synced it from. Check the project's own page before redistributing or bundling it.

How do I install unknown_file.jar?

Install the matching loader first, then put the downloaded file in your mods folder and start the game. The loader, the mod and Minecraft all have to be on the same version, which is the usual reason a mod does not appear in game.

Where do I download unknown_file.jar safely?

Start with the author's page on Modrinth, which is where the data here is synced from. MCReference does not host or repackage files. When available, recorded download links go to the source for that release; verify the publisher, filename and any available checksum before running it.

Which Minecraft versions does unknown_file.jar work on?

The author has not declared a supported version in the metadata we sync, so there is nothing here we can state as fact. Check the project's own page before installing it, and treat an old mod with no declared version as untested on modern Minecraft.

Details from Modrinth, where the author last updated it on 3 Jun 2026. We do not host files or republish descriptions. Available download links point to the author’s own release.

Not indexed yet. Score 46 against a threshold of 55. The page still exists and is still linked; it simply carries noindex until we hold more.

Is this information wrong or missing something? .