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Create Colonies Aeronautics Modpack: Server Setup Guide for Minecraft 1.21.1

A complete setup guide for running Create Colonies - AERONAUTICS on a dedicated NeoForge 1.21.1 server, using the matching CCA SERVER archive and synchronized CurseForge clients.
Length10 min Posted Quest giverVGSources Team
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To run Create Colonies – AERONAUTICS with friends, use the modpack’s separate CCA SERVER archive on a NeoForge server for Minecraft 1.21.1. Install the matching client profile for every player, keep the server and client release numbers aligned, and start from a clean directory rather than combining files from different pack versions. The project’s Files listing currently identifies CCA SERVER 10 as the server-pack line for 1.21.1 NeoForge.

What Create Colonies – AERONAUTICS requires

Create Colonies – AERONAUTICS is a CurseForge modpack that combines Create automation, MineColonies settlement management and Aeronautics aircraft progression. Its advertised progression includes more than 300 quests, a custom starting structure and the AERO SMP setting. Those features are delivered through a coordinated client and server file set, so installing a generic NeoForge server and copying only a few visible mods is not a reliable substitute for the official server archive.

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Component Required value Why it matters
Minecraft 1.21.1 The pack files and server releases listed for this project target this game version.
Mod loader NeoForge Both the client profile and dedicated server must use the NeoForge-compatible files.
Client distribution Create Colonies – AERONAUTICS profile from CurseForge Players need the same mods, configs and pack release as the server.
Server distribution Separate CCA SERVER archive This is the project’s dedicated-server distribution; the Files listing identifies CCA SERVER 10 for 1.21.1 NeoForge.

A server can sometimes boot with a hand-selected collection of mods, but that approach can omit configuration, datapack or startup files included in the server package. For a first installation, treat the CCA SERVER archive as the authoritative starting point.

Choose the release before you install anything

Match the client and server release

Record the exact client profile version you intend to give players, then select the corresponding CCA SERVER release from the project’s official Files page. The current listing names the client release Create Colonies – AERONAUTICS-10 and a separate CCA SERVER 10 file. “Latest” is not enough if players already have an older profile: a newer server can reject older clients through missing mods, registry differences or handshake checks.

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  • EXPLORE AND CRAFT — Discover biomes, resources, and mobs, then craft your way through a sandbox world filled with surprises.
  • SURVIVE THE ADVENTURE — Face mysterious foes, travel across exciting landscapes, and venture into perilous dimensions.
  • PLAY TOGETHER — Play cross-platform with friends in Bedrock Edition on console, mobile, and PC, or join community servers in Java Edition on PC, Mac, and Linux. Online console multiplayer requires a platform-specific subscription (sold separately).

Do not mix a CCA SERVER archive from one release with a client profile from another unless the pack author explicitly documents that combination. Keep the downloaded archives and a text note containing the release names; that record makes later troubleshooting and rollbacks much easier.

Understand older server archives

Previous releases remain available in the Files index. For example, the CCA SERVER 9 record is a 618.7 MB ZIP uploaded May 16, 2026 for Minecraft 1.21.1 NeoForge. Its note says “fix stuff and additions tanks not filling.” That describes that historical release only; it is not a guarantee about CCA SERVER 10 or any later file. Use an older archive only when you deliberately keep every player on the matching older client profile.

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Prepare the client profile

  1. Install Minecraft Java Edition and a launcher that can create CurseForge modpack profiles.
  2. Create or import a profile for Create Colonies – AERONAUTICS from its official CurseForge project page.
  3. Open the profile’s details and confirm that it reports Minecraft 1.21.1 and the NeoForge loader before launching.
  4. Launch the profile once on the client. This lets the launcher download its files and exposes any local installation problem before you involve a server.
  5. Give every player the same profile release. Avoid individually updating mods inside the profile unless the pack author’s instructions require it; an apparently harmless single-mod change can create a server handshake mismatch.

CurseForge’s support documentation describes creating and managing profiles with a selected game version and modloader. The profile’s displayed version, rather than a launcher label such as “latest,” is the value to compare with the server archive.

Install a self-hosted dedicated server

The sequence below assumes a clean server directory and administrative access to the machine. The exact NeoForge installer filename, generated launch script and JVM argument layout vary by installer revision, so use the files produced by the current installer instead of copying a command from an unrelated guide.

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  • ULTIMATE COLLECTION — Includes Minecraft: Java & Bedrock Edition, five Bedrock add-ons, five exclusive Character Creator items, and 1000 Minecoins.
  • CREATE YOUR WORLD — Build whatever you imagine in an infinite world that’s unique in every playthrough.
  • EXPLORE AND CRAFT — Discover biomes, resources, and mobs, then craft your way through a sandbox world filled with surprises.
  • SURVIVE THE ADVENTURE — Face mysterious foes, travel across exciting landscapes, and venture into perilous dimensions.
  • PLAY TOGETHER — Play cross-platform with friends in Bedrock Edition on console, mobile, and PC, or join community servers in Java Edition on PC, Mac, and Linux. Online console multiplayer requires a platform-specific subscription (sold separately).

1. Create a clean directory

Make a new directory dedicated to this world, such as cca-server-10. Keep it separate from vanilla worlds, older modpack experiments and any previous CCA installation. A clean directory prevents stale libraries and configuration files from silently overriding the files in the new archive.

2. Install NeoForge for Minecraft 1.21.1

Download the NeoForge installer appropriate for Minecraft 1.21.1 and run its server-install option in the new directory. Let the installer generate its libraries, launch scripts and support files. Do not replace those generated files with a launch command copied from a different NeoForge release; the installer may change both filenames and argument handling.

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3. Expand the official CCA SERVER archive

Extract the matching CCA SERVER ZIP into the same server directory. Preserve its folder structure. If your archive manager offers to merge directories, allow the pack files to land at the server root rather than creating an extra nested folder such as cca-server-10/CCA SERVER 10/. After extraction, check that the generated NeoForge files and the server-pack contents are visible from the directory in which you will launch the server.

4. Perform the first start

Run the launch script generated by the NeoForge installer. The first start normally creates configuration files and an EULA file, then stops or pauses until the EULA decision is made. Read the Minecraft EULA, set the EULA file’s acceptance value only if you agree to it, and start the server again. Keep the first-start log; it records the loader, detected mods and the point at which a failure occurred.

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  • CREATE YOUR WORLD — Build whatever you imagine in an infinite world that is unique in every playthrough.
  • EXPLORE AND CRAFT — Discover biomes, resources, and mobs, then craft your way through a sandbox world full of surprises.
  • SURVIVAL ADVENTURES — Face mysterious foes, travel across varied landscapes, and venture into perilous dimensions.
  • PLAY TOGETHER — Play solo or join friends in local split-screen and cross-platform play across console, mobile, and PC. Online multiplayer supports up to 8 players.
  • COMMUNITY PLAY — Connect with players on community servers, or subscribe to Realms Plus (sold separately) to play with up to 10 friends on a private server.

5. Set basic server properties

Stop the server cleanly before editing server.properties. Set the values appropriate for your group:

  • Server name or MOTD: identify the AERO SMP world so players select the right entry.
  • Game mode and difficulty: choose the rules you want before players establish colonies.
  • Whitelist: enable it for a private group and add players by their exact Minecraft names.
  • View and simulation distance: start conservatively, then raise them only if the machine remains responsive.
  • Port: choose an unused port and use that same value in the host firewall and any router forwarding rule.

Make one change at a time while diagnosing a problem. A server that fails after several simultaneous edits is harder to interpret than one with a single changed setting.

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6. Start with the generated script

Use the launch script created in your server directory, not a guessed java line. If the script references a particular Java executable or memory flags, follow the requirements shown by your NeoForge installer and operating system. The official pack pages do not publish a definitive RAM minimum or Java major-version requirement for this exact release, so do not treat a number copied from another modpack as an official requirement. Watch the log during startup and increase or reduce the allocation based on observed pauses, operating-system pressure and the number of loaded players.

7. Join locally before opening the server to the internet

From the host machine, connect with the local address shown by your operating system and the port configured in server.properties. Confirm that the world loads, the custom starting structure appears as expected and the Create, MineColonies and Aeronautics content is available. A local connection separates pack or loader errors from router and firewall problems.

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Make the server reachable to other players

Firewall and router checks

Permit the selected server port through the host operating system’s firewall and, when the machine is behind a router, forward that port to the host’s local address. The specific screens and commands differ by operating system and router model; the important rule is that the external port, forwarded internal port and server.properties port must agree. Reserve the host’s local address in the router when possible so a lease change does not break the forwarding rule.

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Give players the correct address

Players outside your network need the public address (or a DNS name that resolves to it) and the configured port. Players on the same local network may need the host’s private address instead. Do not post a private address as though it were an internet address, and do not expose a server publicly until the whitelist and authentication settings match your intended audience.

When connections still fail

  • If the server console never reports a listening socket, inspect the startup log and the configured port before changing router settings.
  • If local connections work but remote connections fail, check firewall and forwarding rules, then confirm that the internet connection permits inbound connections.
  • If players connect and are immediately kicked, compare their profile release and loader with the server before investigating networking.

Keep every client synchronized

Distribute one named client profile to your players, preferably by telling them the exact Create Colonies – AERONAUTICS release and the Minecraft 1.21.1/NeoForge values they should see in their launcher. Ask players to close the game completely after updating so the launcher does not leave old libraries or a half-updated profile in use.

Typical mismatch symptoms include “missing mods,” registry errors, a failed handshake or a disconnect during the loading screen. These messages usually mean that the client and server disagree about a mod, version or configuration. Compare the server archive name with the client profile first; only then inspect individual logs.

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Symptom Likely check Corrective action
Server stops before creating a world NeoForge installation, Java executable, archive extraction and first-start log Reinstall NeoForge in a clean directory, restore the generated launch script and read the first error rather than deleting random files.
Missing-mod or handshake error Exact client profile and CCA SERVER release Put every player on the same release and remove manually added or removed mods.
World loads but pack content is absent Archive nesting and server root Verify that the CCA SERVER contents were extracted into the directory used by the launch script.
Players time out remotely Port, firewall and router forwarding Test locally, then align all three network settings and confirm the host’s local address has not changed.
Severe lag after several players join Allocated memory, CPU share, view distance and storage activity Lower distances, close competing workloads and monitor the host before changing pack files.
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Backups and updates without losing a colony

What to back up

Stop the server cleanly before taking a manual backup. Preserve the world directory, the config directory and pack-specific data generated alongside them. Keep the CCA SERVER ZIP and the client release name with each backup so you can reconstruct the exact environment that created the world.

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  • Keep at least one backup away from the live server machine.
  • Use dated folders or filenames and record the release, Minecraft version and NeoForge version.
  • Restore a copy of the world to a test directory before applying a pack update.
  • Do not overwrite a working backup with an untested update.

Test an update safely

  1. Choose the target client release and its matching CCA SERVER archive.
  2. Copy the live world and configuration data to a separate test directory.
  3. Install the target NeoForge server files and extract the target server archive into that test directory.
  4. Start the test copy, inspect the log and join with a client using the target profile.
  5. Check a colony, an aircraft progression task, Create automation and a representative quest before scheduling the live update.
  6. Announce downtime, stop the live server, take a final backup and apply the tested files.

If the test fails, return to the previous server directory and backup rather than attempting to repair the live world while players are connected.

Self-hosting or managed hosting?

Self-hosting gives you direct control over files, JVM flags, backups, whitelist settings and restart schedules, but you are responsible for installation, network exposure, operating-system maintenance and recovery. A managed host can remove much of that administration, provided it supports this exact combination of Minecraft 1.21.1, NeoForge and the official CCA SERVER archive.

Decision factor Self-hosted machine Managed hosting
Compatibility You select the NeoForge installer and place the official archive yourself. Verify in writing that the panel runs Minecraft 1.21.1 NeoForge and accepts the CCA SERVER archive.
Control Full shell, JVM, configuration, whitelist and scheduled-task access. Depends on the panel; confirm file manager, console and custom JVM-argument access.
Maintenance You perform NeoForge, pack and operating-system updates. The provider may handle machine maintenance, but pack updates and compatibility still require your approval.
Performance Depends on your CPU, memory, storage and other workloads. Depends on the allocated memory, CPU share, storage type and player-count limits in the plan.
Recovery You design backups and test restores. Confirm backup frequency, retention, restore points and whether you can download world and config files.
Cost and terms Hardware, electricity and internet costs are yours. Recurring price, renewal terms and resource limits vary; verify them directly before subscribing.

No official page for this pack establishes a universal RAM minimum, Java major-version requirement, operating-system matrix or host-by-host compatibility table. Treat any provider’s “one-click modpack” label as a starting point, not proof that the CCA SERVER archive has been tested. Ask whether you can upload the archive, select NeoForge 1.21.1, access logs, download backups and restore a complete world.

Alternative server tooling: what it can and cannot tell you

General modpack-server documentation also discusses Modrinth Servers, mrpack-install and the itzg/minecraft-server Docker image. These tools can be useful for server automation when a pack is distributed in a compatible format, but their existence does not establish that Create Colonies – AERONAUTICS is distributed or tested through Modrinth. For this project, CurseForge and the CCA SERVER file remain the authoritative distribution path. Use an alternative tool only after confirming that it can install the exact server archive and preserve its directory layout.

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Launch-day checklist

  • Client and server both show Minecraft 1.21.1.
  • Both use NeoForge-compatible pack files.
  • Every player has the same Create Colonies – AERONAUTICS release.
  • The server uses the matching CCA SERVER archive, currently listed as CCA SERVER 10 for the current release line.
  • The archive is extracted into the server root, not an accidental nested directory.
  • The EULA decision has been made and recorded.
  • server.properties contains the intended game mode, difficulty, whitelist, distances and port.
  • The generated NeoForge launch script starts the server without copied arguments from another version.
  • A local connection succeeds before remote players test the public address.
  • The world, config directory and pack-specific data have a dated backup.

Following this sequence keeps the version-sensitive work in one place: install the official CCA SERVER archive on NeoForge 1.21.1, synchronize clients to that same release, and make changes only after a backup and a test copy exist.

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