Why Launcher

How to install Minecraft mods

Mods can change anything — from new mobs to whole new dimensions. For a mod to work you need a loader (Forge, NeoForge or Fabric) of the same version as the mod.

Way 1

With Why Launcher — in a minute

  1. Download and install Why Launcher.
  2. Create a profile with the loader the mod needs: Сборки (Profiles) → Создать сборку (Create profile).
  3. Open Моды, паки и скины (Mods, packs and skins) → Моды (Mods), choose Modrinth or CurseForge and search for the mod. Press Установить (Install): the launcher takes the file for your version and loader and installs dependencies.
  4. On the Установлено (Installed) tab you can switch mods off without deleting them — handy when something crashes.

The CurseForge catalog needs a free personal key: get it at console.curseforge.com and paste it into Настройки (Settings) → Источники контента (Content sources). Modrinth works without a key. The Why Launcher interface is in Russian, so button names are given in Russian with a translation.

The CurseForge mod catalog in Why Launcher
The CurseForge mod catalog in Why Launcher

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Way 2

Manually

  1. Install the loader the mod is made for: Forge, NeoForge or Fabric.
  2. Download the mod from modrinth.com or curseforge.com. On the files page pick the file for your Minecraft version and your loader.
  3. Check the mod’s dependencies — Fabric API or Cloth Config, for example — and download them too.
  4. Press Win + R, type %APPDATA%\.minecraft and press Enter. Open the mods folder, or create it if it’s missing.
  5. Put the .jar files there. Don’t unpack them.
  6. Start the game with the loader’s installation in the official launcher.

If something goes wrong

  • The mod doesn’t show up in game — check that you started the loader’s installation, not plain Minecraft, and that the mod is for the same Minecraft version.
  • The game crashes — a dependency is missing or two mods conflict. Remove the latest mods one by one.
  • Download mods only from Modrinth and CurseForge. Other sites carry old versions and sometimes malware.

FAQ

Where do mods go?

Into the mods folder inside %APPDATA%\.minecraft. In Why Launcher every profile has its own folder, and mods install from the catalog without copying files.

Can I play with mods on a server?

Mods that add blocks and mobs must be on both the server and the player. Client-only mods — minimaps, Sodium, shaders — work on any server.

Do mods work without a license?

Mods don’t depend on the license: they work on an offline account in Why Launcher too. Licensed servers need a purchased Minecraft.

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