Set up a Medieval Minecraft server

Medieval MC is a series of fantasy RPG modpacks from Luna Pixel Studios. This guide covers Medieval MC [FORGE] MMC4, the Forge edition for Minecraft 1.20.1. Its CurseForge page lists quests, bosses and custom content, in-depth magic mods, kingdom building with MineColonies, a stamina, thirst and temperature system, and more than 350 mods in all. You install the server from the Modpacks tab, using the pack's own server files.

Checked against Medieval MC [FORGE] MMC4 v39 (the CurseForge file of 26 February 2026) on Forge 47.4.13 and Minecraft 1.20.1, October 2026.

What the pack needs

• Minecraft 1.20.1 with Forge 47.4.13. The server pack's variables.txt names both, and the panel installs that Forge build for you. For Minecraft 1.20.1 the panel runs Java 17 on its own.
• Memory. The pack page gives no figure. The server pack's variables.txt starts Java with -Xmx4G, and the pack holds 407 mod jars, so treat 4 GB as the floor and watch the RAM card. Your plan sets the RAM, so see how much RAM a Minecraft server needs and the Minecraft plans.
• Disk space. The server pack is a download of about 1.44 GB and unpacks to about 1.52 GB. The download sits on your plan's disk while it unpacks, so you need room for both.
• The same pack version for players. This guide installs v39. Players need that version in the CurseForge app.

Install the server files

Installing a modpack reinstalls the server and replaces the current world, so use a new server or one you can wipe.

1. Open Backups under Essentials and press Create backup if the server holds anything you want to keep.
2. Open Modpacks under Content in the left rail.
3. Press the CurseForge source button, then search for MMC4. A search for Medieval MC lists several other medieval packs first.
4. Press Install on Medieval MC [FORGE] MMC4 by LunaPixelStudios. The popup says it reinstalls your server and names Forge and Minecraft 1.20.1.
5. Leave Take a backup first ticked. Tick Start the server when it's ready if you want the server to start itself, and tick I agree to the Minecraft EULA if the popup shows it.
6. Press and hold Hold to Install and reinstall until it fills, then watch the Console tab until the install log reports Pack installed.

First start

Press Start on the Console tab. The server pack carries no eula.txt, so unless you accepted the EULA in the install popup or earlier on this server, the panel opens Accept the Minecraft EULA first. The server is up when the console prints a line containing For help, type. Your address is in the left rail under Server address, and Connect to your server for the first time covers adding it in Minecraft.

The pack ships its own server.properties, and two of its values matter on day one:

• max-players=10 is Player slots in Config Editor. Raise it there if more than ten people will join, then press Save changes and restart.
• white-list=false means the whitelist is off, and enforce-whitelist=true, the Enforce whitelist switch, kicks players already online when they are removed from it. Whitelist players and set operators covers the Players tab.

Other Medieval MC editions

The series has separate packs for other versions, and each has its own page on CurseForge: MMC1 (Fabric, Minecraft 1.19.2), MMC2 (Fabric, 1.20.1), MMC3 (Fabric, 1.21.1) and MMC5 (NeoForge). Search for the name of the edition you want. The steps above are the same, but they are separate packs, so players need the edition the server runs.

Common problems

• A player cannot join. They need Medieval MC [FORGE] MMC4 v39 on Minecraft 1.20.1 with Forge.
• The server lags or runs out of memory. Watch the RAM card on the Console tab and the TPS reading in the left rail, lower View distance (chunks) and Simulation distance (chunks) in Config Editor under Performance, and move to a bigger plan if the RAM card stays full. Why is my server lagging has more.
• The install stops while unpacking. Your plan's disk may be too small. Check Disk Analyser, clear space and install again. Server out of disk space shows how.
• The server crashes at boot. Find and read a crash report shows how to name the mod at fault.