How to install a modpack on your server

A modpack is a mod loader, a list of mods and their configs. On FadeHost a pack installs in one click; a pack that is not on the platforms takes a few manual steps.

From the panel

Resources, Modpacks, Browse. Find the pack on CurseForge or Modrinth, press Pick a version and Install the one you want.
The panel says what installing changes before anything happens. The pack becomes the server’s modpack: its mods replace everything in the mods folder, including mods you added yourself, and its config files are applied. The world stays.
Press Install and restart, or Install and then start a stopped server. On that start FadeHost installs every mod in the pack, its config files and the loader build it needs, and leaves out the client-only mods that crash dedicated servers. The first boot registers every mod and can take several minutes. Wait for the Done line.

The server has to run the pack’s loader and Minecraft version, NeoForge 1.21.1 for a NeoForge 1.21.1 pack. If it runs something else, the panel says so and installs nothing: switch the server under Settings, General, Server Software first, then install the pack.

A server can also be created straight from a pack: at creation, choose A modpack as the source. Every pack we list has a page with its RAM table and hosting notes: modpacks.

Change the pack’s version

Resources, Modpacks shows the server’s pack and its version at the top. Change version finds the pack; press Pick a version and Install the release you want, older or newer. Back up first if you may want the current release back. On the next start the mods are replaced with that release and its config files are applied; the world stays.

A pack that is not listed

Open Server Software in the header and set the pack’s loader and Minecraft version. Save.
Get the pack’s server pack from its author (not the client zip, which has no mod jars). Upload it in Files and Unzip, or upload over SFTP.
The unzipped mods, config and any kubejs or defaultconfigs folders go in the server folder. Remove shaders and other client-only mods from mods if the author shipped them.
Start and watch the console.

Players

Everyone needs the same pack, same version, in their launcher (CurseForge, Modrinth or Prism). A client on a newer version is refused or misses content. Pin the version for the group and update together.

Good to know

Packs are heavy. 6 GB is a floor for most; the pack page says what the pack really uses. See Allocate RAM.
Pregenerate the area your group will explore (Chunky is in most packs, or install it) before launch night. Fresh chunk generation is the biggest lag source in modded Minecraft.
A pack’s blocks vanish from the world if the pack is removed or a mod is dropped; back up before changing anything.