How do I manually install Forge or Fabric (installer, server.jar naming)?
Most of the time the Versions tab installs Forge or Fabric in one click. But for a build the tab doesn't list, you can install the loader manually. Here's the full process.
Manual Forge/Fabric install
- Download the Forge/Fabric server installer and generate the server files on your PC (or upload the installer and run it).
- Upload the resulting files (loader jar +
libraries) to the server root via SFTP. - Point the startup at the loader — rename the run jar to
server.jar, or set theSERVER JAR FILEvariable in the Startup tab. (Modern Forge uses an args file; set the startup command accordingly.) - Start from the Console.
When to go manual vs. automatic
The Versions tab does all of this in one click — only go manual for builds it doesn't list.
Tip: Modern Forge no longer runs from a single jar — it uses an args file, so set the Startup command accordingly rather than relying only on
server.jar.
Frequently asked questions
Do I have to do this manually? Only for builds the Versions tab doesn't offer — otherwise use the one-click installer.
What do I name the jar? Rename the run jar to server.jar, or point the SERVER JAR FILE variable at it in the Startup tab.
Modpacks are the most memory-hungry thing we host, and one that will not start is usually short of RAM rather than broken. Our Supreme and Ultimate Minecraft plans are the ones sized for heavy modpacks.