Install the same Minecraft version on every player’s PC
Install the same mod loader on every player’s PC, such as Forge, Fabric, or NeoForge
Download the exact same mods and mod versions for every player
Put the mods in each player’s Minecraft mods folder
Make sure every player has the same required dependencies and libraries
Launch the game once to confirm the modpack loads correctly
Choose one person to host the world or server
Use a local network world for nearby players
Use a dedicated server for remote players
Install the same mod loader and mods on the server
Copy the mod files to the server’s mods folder
Start the server and confirm it runs without errors
Share the server IP address with friends
Allow Minecraft and the server through firewall settings
Open the server port on the host router if needed
Join the server using the correct IP and port
Use a shared modpack launcher if possible
Keep backups of the world and server files
Update all mods together when changing versions
Remove conflicting mods if the game crashes
Check that client-only mods are not installed on the server
Check that server-only mods are installed only on the server
Restart the game and server after any mod changes