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nanonestor edited this page Jun 15, 2026 · 4 revisions

Basics Walkthrough - Windows 10/11

1. Create or use a folder using File Explorer

  • Open File Explorer - you can Windows search for it if needed

  • Find This PC in the left-hand column
  • Within This PC select an internal hard drive such as C:\
  • Create a new folder and rename it by either:
    • Clicking New + at the top/left of the Window
    • Right-Clicking in blank space on the right hand column and selecting new > folder in the context menu

Caution

DO NOT Just use a folder located on Windows Desktop / Downloads / Documents.
The script won't let you use these as locations. They can be set as cloud storage and have file access permission issues.

You should now have a folder such as C:\Myserver

2. Get a Universalator script copy

  • Download a ZIP of the newest version of the Universalator script from this github
  • Go to the Downloads folder in File Explorer
  • Right-Click on the ZIP file and choose Extract All... (or use your own zip management program of choice)

  • Find the script file inside the unzipped folder and Right-Click the file, then click Copy

  • Navigate to the empty folder made for the server
  • Right-Click on the right hand column blank space and click Paste

  • Your folder should look like this

Note

If you will be importing a Curseforge app profile continue to step 3.

Note

If you will be importing a Curseforge app profile continue to step 3.

  • If you have a folder of mods you wish to use copy it into this folder (see below)

  • If you have both a folder of mods and additional customizations - copy all of the contents into this folder (see below)
    (Such as a server pack you downloaded)

3. Basic Settings

  • Double-Click or Right-Click>Open to begin running the script copy from this folder
  • If Windows prompts a warning, click Run / Run Anyway / Etc.

Tip

Some Windows versions make you click text labeled more info before showing you Run / Run Anyway buttons.

  • If you have the Curseforge App installed you will be asked if you would like to import a profile directly from the app storage locaton

  • If you enter I for import next enter a number choice

  • If the information looks correct enter Y

Note

Modloader version can be changed later at the main menu.

  • If you are given Java version choices enter a choice.

Note

Java version can be changed later at the main menu.

  • Enter a value for how much RAM (Memory) to use maximum

Note

Look at the top of the window at how much your computer has total and how much free / available

Warning

ALWAYS Enter less maximum Ram for the server than free / available
Your operating system (Windows) and other programs need Ram to operate also!

  • If you want to scan the mod files for ones which only belong on client side (the game program / regular Minecraft program not the server) enter Y when prompted

  • If the scan finds mods that only belong client side and not on servers, confirm you want them removed with Y

4. Launching

  • At the main menu enter L for Launch

Tip

If you want to see all possible main menu commands, enter A instead.

  • Files will download and install if needed for the Java version to be used and for the core Minecraft / Modloader server files.

  • If prompted, accept the Minecraft EULA agreement

  • At the Ready to Launch screen enter anything except M to begin the server program launch

Tip

Note the public IP address displayed for reference - this public IP is for your computer, not for the server program.

  • If the server finishes loading successfully it will show a Done message.

Note

The Done message is almost never the very last line displayed.
Sometimes it's buried in almost a screen's worth of post-done tasks!

5. Joining the server

  • Open a client game using the exact same mods (and file versions) as the server.

Note

You can have additional client-side mods loaded with the game, as long as the server doesn't require them.

  • At the main menu go to the Multiplayer screen

  • Click Add Server

For joining a server running on the same computer

  • Enter the literal word localhost in the address bar.
    (You can also enter 127.0.0.1 which localhost is an alias of)

Important

If you changed settings to use a non-default port number, you will need to enter 127.0.0.1: with the port number following.
For example 127.0.0.1:25585 (See photo below)

  • If the server is seen by the game client you will see green signal bar rather than a red X.
    Click the server entry and then click Join Server

If the above was successful you should now be able to play and use your server!

Tip

Helpful commands

  • /stop safely saves world files and stops the server
  • /op <username> grants admin permissions to a user
  • /deop <userename revokes admint permissions to a user

More Useful Commands - Minecraft Wiki

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