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I'm trying to download a mod on minecraft but every time I press a jar file it opens then closes again straight away. Any ways around this? Btw im a beginner

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  • Depending on your mod loader, you might have to put the .jar file in a specific folder. Follow the instructions of whatever mod loader you want to use (an example is Fabric).
    – John
    Commented Feb 20, 2021 at 23:19

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You are doing this wrong.

  1. First off you need to install the mod loader for the mod, the most common are forge and fabric. Remember, this has to be the right version (eg 1.12.2 forge for a 1.12.2 mod)
  2. After you do that you need to move the jar into your .minecraft/mods folder, on windows this folder is located in appdata.
  3. Once that's done open the minecraft launcher and select the installation for the mod loader you installed. If it doesn't show up click on the installation tab and create a new installation with the mod loader version selected.
  4. You may also want to allocate more ram by changing the advanced settings, I'd recommend you follow a tutorial for that.
  5. Then press play, it might ask you if you want to play the modified version of minecraft, just click yes. That should be all the steps, you might need to install libraries for some mods so make sure you do that.
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    To also clarify, clicking on a jar file won't do anything.
    – Nailington
    Commented Feb 20, 2021 at 17:04
  • @Potterton for mods it usually wont, but often you have to open jars to install mod loaders and minecraft itself is a jar.
    – Topcode
    Commented Feb 20, 2021 at 17:06
  • Okay, thanks. I don't often deal with mods so my knowledge is limited.
    – Nailington
    Commented Feb 20, 2021 at 17:07
  • @Topcode but the .jar like in minecraft is started by another process, not clicked
    – Penguin
    Commented Feb 21, 2021 at 1:18
  • @Penguin usually, but if i wanna open mc by click the jar i will
    – Topcode
    Commented Feb 21, 2021 at 3:40

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