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Arma Reforger – Restoring from a Backup

ARMA REFORGER

How to restore your world (save data) and settings from a backup you have created. The confirmation dialog contains one option that will stop your server from starting, so please read that part carefully. Restoring a server that runs mods is covered in the second half of this page.

About 5 min readUpdated 2026-08-14For Arma Reforger

How to restore

  1. Open “Backups” from the left menu of your server management screen.
  2. Click the “⋯” → “Restore” at the right end of the backup you want to restore.
  3. A confirmation dialog appears — run “Restore” as it is.
The Backups screen (panel shown in Japanese). Open the “⋯” menu at the right of a backup and choose 復元 (Restore).
The Backups screen (panel shown in Japanese). Open the “⋯” menu at the right of a backup and choose 復元 (Restore).
Your server stops automatically while the restore runs. Until it finishes you cannot use power controls, the file manager, or create a new backup. Start the server once it has finished.

Please be careful with the checkbox in the dialog

The restore confirmation dialog has a checkbox labelled “Delete all files before restoring the backup.”

The restore confirmation (panel shown in Japanese). Leave the checkbox — “delete all files before restoring the backup” — unchecked, then press Restore.
The restore confirmation (panel shown in Japanese). Leave the checkbox — “delete all files before restoring the backup” — unchecked, then press Restore.
Normally, leave this unchecked (it is off by default).
If you check it, every file is deleted, including the game program files. Restoring from that state does not bring the game itself back, so the server will no longer start.

If you did check it by mistake, you can still recover with the steps in “Restoring after a reinstall” below. Your world data is not lost.

What a backup does and does not contain

CategoryContents
IncludedWorld (save data) / server settings / mods / logs
Not includedThe game’s own program files

The game itself is several GB to around 10 GB, and it is identical for every customer. We can fetch it again automatically, so we deliberately leave it out of the backup.

Because of this, you can keep far more backup generations, and the game keeps running smoothly while a backup is being taken. Your world and settings are protected exactly as before.

Restoring after a reinstall

If you have reinstalled the server, or if something is wrong with the game files, the order matters.

1. Reinstall → 2. Restore from backup
Please run them in this order. The other way round, the reinstall wipes the world you just restored.

The reinstall puts the game itself back, and the restore that follows brings your world and settings back. For the reinstall steps, see Reinstallation procedure when the server fails to start.

Restoring a server that uses mods

Mods are included in the backup. Restoring brings your mods back with everything else.

That said, there are two cases where a mod stops the server from starting, and they are handled differently. Check the console screen first.

1. The mod cannot be found

Addon <ID> - Addon was not found on workshop.

Either the mod ID is mistyped, or that mod is no longer published on the Workshop.

The server still starts (only that one mod is not loaded). Check the ID in the mod list on the “Startup” tab.

2. The mod does not match the game version

Addon loading failed {<ID>}

The mod has not caught up with the current game version. In this case the server may fail to start. Remove that ID from the mod list on the “Startup” tab for now. Once the mod is updated you can add it again.

We never remove your mods automatically. We keep your configuration exactly as you set it and only report the warning — because once the mod is updated, it will simply work again.

If something does not go to plan

SymptomWhat to check
Restored, but this is not the world I expectedCheck the creation date and time of the backup you restored.
The server will not start after restoringCheck the console screen. The cause and what to do are shown there.
My world disappeared after a reinstallRestore after the reinstall. Your backups are still there.

If that does not solve it, send us the message exactly as it appears and we will take a look.

How many generations you can keep

The number of backups you can keep is set by your plan. For Arma Reforger that is 10 generations on Lite, 15 on Standard, 20 on Large and 30 on XL.

When the limit is reached and a scheduled backup runs, the oldest one is replaced automatically.

For details, see Procedure for setting a regular schedule on a game server.

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