This guide will guide you on how to upload and use your JAR file, whether it be a developer build of Craftbukkit, Tekkit, or any other JAR you’d like to use.

📻 Where to Find Server Jar Files 📻

Here you can find all Vanilla server builds, even snapshots, from the first version to the latest. Just use it to get the server jar file.

Here you can find all CraftBukkit server builds, from the first version to the latest. Just use it to get the server jar file.

Here you can find all Spigot server builds, from the first version to the latest. Just use it to get the server jar file.

Here you can find all Paper server builds, from the first version to the latest. Just use it to get the server jar file.

🔩 How to Upload My Custom Jar 🔩

First, you will have to download the custom jar you want to use.

After doing so you will have to decide what Java version you need for you jar file. We provide three Java versions that you are able to use:

Java 8
Java 11
Java 16
Java 17

Usually, older modpacks are running on Java 8.

As for Paper, versions above 1.17 are running on Java 16.


To upload the custom jar to your server please do the following:

Rename your custom jar file to one of the following, depending on the Java version you want to use:

custom-java8.jar
custom-java11.jar
custom-java16.jar
custom-java17.jar


Use Filezilla to upload the new jar file to your jar folder located in the root directory of your server ( /jar).

Here is our guide for using Filezilla.




Log in to your Multicraft panel here, find the Server Type box, set it to one of the following depending to what Java version are you trying to use, then click on Save:

Custom (Java 8)
Custom (Java 11)
Custom (Java 16)
Custom (Java 17)




Start your server.

Now you just set up your custom jar file.


If you find any issues setting up your custom jar file please contact us on live chat or via the ticket system.

❕ Useful Links ❕

- How to connect with FileZilla
- How to Upload a World to Your Server
- How To: Change your server to offline mode

Updated on: 09/05/2022