DayZ Server – Installing and Managing Mods

This guide shows you step by step how to install and manage mods on your DayZ server. DayZ has an active modding community – from new weapons to vehicles to complete map overhauls. Installation is done entirely through the Steam Workshop.

How Do DayZ Mods Work?

DayZ mods are subscribed to via the Steam Workshop. The server downloads them on startup and keeps them up to date. Unlike ARMA 3, players don't need to manually install mods – the server transmits the mod list automatically and players download the mods when connecting via the DayZ Launcher.

Step 1: Find Mods in the Steam Workshop

1. Open the Steam Workshop for DayZ: steamcommunity.com/app/221100/workshop
2. Browse the categories or enter a search term
3. Each mod has a unique Mod ID – you can find it in the URL:

   https://steamcommunity.com/sharedfiles/filedetails/?id=1559212036
                                                            ^^^^^^^^^^
                                                            Mod ID

4. Note down the Mod IDs of all mods you want to install

Step 2: Download Mods to the Server

Method A: Automatic via Server Startup Parameters (Recommended)

The easiest way – the server downloads mods automatically on startup:

# In your server startup script
-mod=@1559212036;@1564026768;@1646187754

Separate multiple Mod IDs with semicolons. The server automatically downloads missing mods on the next start.

Method B: Manual Download via SteamCMD

# Start SteamCMD
cd ~/steamcmd
./steamcmd.sh

# Log in
login YOUR_STEAM_USERNAME

# Installation directory
force_install_dir ~/dayz-server

# Download mod by Workshop ID
workshop_download_item 221100 1559212036 validate

# 221100 = DayZ App ID
# 1559212036 = Mod ID

Step 3: Activate Mods in Server Configuration

Open your serverDZ.cfg and add the mods:

// Activate mods
mods = {
    "@1559212036",
    "@1564026768",
    "@1646187754"
}

// Mod load order (important for dependencies)
modOrder = {
    "@1559212036",    // Foundation mods first
    "@1564026768",    // Mods that build on them
    "@1646187754"     // Additional mods
}

Step 4: Install Mod Keys

Each mod has a .bikey key that must be placed in the server's keys/ folder:

# Create keys folder (if it doesn't exist)
mkdir ~/dayz-server/keys

# Copy keys from all mods
cp ~/dayz-server/@1559212036/keys/*.bikey ~/dayz-server/keys/
cp ~/dayz-server/@1564026768/keys/*.bikey ~/dayz-server/keys/

Step 5: Start Server and Check Mods

1. Start the server with the adjusted startup script
2. The server downloads mods automatically on first start
3. This can take 5-30 minutes depending on mod size
4. You can see the progress in the console

The Most Important DayZ Mods

Keeping Mods Up to Date

# Update all mods via SteamCMD
cd ~/steamcmd
./steamcmd.sh

login YOUR_STEAM_USERNAME
force_install_dir ~/dayz-server

# Update each mod individually
workshop_download_item 221100 1559212036 validate
workshop_download_item 221100 1646187754 validate

quit

Optimizing Mod Load Order

The order is crucial. Wrong order = crashes or faulty mods:

1. CF (Community Framework) – ALWAYS first
2. Dabs Framework – Second framework
3. Basic mods: BuilderItems, BaseBuildingPlus
4. Function mods: Trader, Bank, Spawn Select
5. Content mods: Weapons, vehicles, clothing
6. Large overhauls: Expansion (last)

Common Problems

Server won't start after mod installation:

• Check mod order – CF must always be loaded first
• Are keys missing from the keys/ folder?
• Check if all dependencies are installed (CF, Dabs Framework)

Players cannot join ("Mod mismatch"):

• Player has a different mod version than the server
• Player must restart the DayZ Launcher to load mod updates
• Server mod list has changed – player needs to reconnect

Mods load extremely slowly:

• Large mods (over 1 GB) take a long time the first time
• Players with slow internet connections need patience
• Install mods on SSD – HDD is the bottleneck here

Quick Checklist

1. Mod IDs noted from the Steam Workshop
2. Mods downloaded via startup parameters or SteamCMD
3. Mods registered in serverDZ.cfg (mods and modOrder)
4. Keys copied to the keys/ folder
5. Mod load order checked (CF first)
6. Server started and checked for errors