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Arma Reforger mods come from the official Arma Reforger Workshop — Bohemia’s own platform, built into the game (not Steam Workshop). Installing mods on your server is refreshingly simple: you list them in your server config, the server downloads them on startup, and every player who joins auto-downloads the same mods automatically — on PC and console alike.

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How It Works

  1. You add each mod’s ID (GUID) and name to the mods array in your server’s JSON config.
  2. On the next start, the server downloads the listed mods from the Workshop.
  3. Clients joining your server download any mods they’re missing before entering — no manual installs.

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Step 1: Find the Mod ID

Every Workshop mod has a unique 16-character hexadecimal ID (a GUID), for example 591AF5BDA9F7CE8B.
Browse the Workshop at reforger.armaplatform.com/workshop. Open a mod’s page — the mod ID is shown on the page and in the page URL. Copy it exactly.

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Step 2: Add Mods to Your Server Config

Open your server’s JSON config in the Game Panel File Manager and add entries to the mods array inside the game block: 
"game": {
  "name": "My Wasabi Modded Server",
  "scenarioId": "{ECC61978EDCC2B5A}Missions/23_Campaign.conf",
  "mods": [
    {
      "modId": "591AF5BDA9F7CE8B",
      "name": "WeaponSwitching"
    },
    {
      "modId": "5965550F24A0C152",
      "name": "Where Am I"
    }
  ]
}
  • modId — the GUID from the Workshop (required).
  • name — human-readable label; helpful for you, and used in logs (required).
  • version — optional. Add "version": "1.0.1" to pin a specific version; omit it to always run the latest. Pinning avoids surprise breakage when a mod updates, but you must bump it manually.
Keep the JSON valid: entries are separated by commas, and the last entry has no trailing comma. A malformed mods array stops the server from starting. See Server Configuration for the full file layout.

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Step 3: Restart and Verify

Restart the server from the panel. Watch the Console: the server logs each mod as it downloads and loads. Large mods take time on first start — subsequent starts reuse the downloaded files. Once it’s up, join in-game; your client will auto-download the mod list (see Join Your Server).

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Scenario Mods

Some mods don’t just add content — they add entire scenarios (game modes or missions). For those:
  1. Add the mod to the mods array as usual.
  2. Change scenarioId to the scenario the mod provides. Mod authors list their scenario IDs on the Workshop page, and the server console prints available scenarios from loaded mods at startup.

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Load Order and Dependencies

  • If a mod depends on other mods, list the dependencies in the mods array too. The Workshop page shows a mod’s dependencies — missing ones typically cause errors at startup or on join.
  • The order of entries in the mods array generally follows list order for loading. For most content mods order doesn’t matter; when two mods patch the same thing, follow the mod author’s recommendation.
  • Fewer, well-maintained mods beat a huge list: every mod adds download time for new players and potential breakage on game updates.

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Common Errors

Usually one of: a typo in the GUID (check every character — it must match the Workshop ID exactly), broken JSON syntax (missing comma/quote), or a pinned version that no longer exists. The console log names the offending mod.
Major Reforger updates frequently break mods until authors update them. If your server fails to load or players crash on join after patch day, temporarily remove the suspect mods from the array, restart, and re-add them once updated versions are published.
Their client must be on the same game version and able to download the mods. Have them retry (downloads resume), pre-download the mods from the in-game Workshop, and confirm the mod list hasn’t just changed server-side while they were queued.

Server Configuration

The full annotated JSON config reference.

Admin Commands

Admin access, in-game commands, and Game Master.
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