Run Steam Update when ATLAS receives a server patch or when players report a version mismatch.
- Open your ATLAS server in the control panel.
- Take a backup, then stop the server.
- Click Steam Update.

- Wait for the update task to finish before starting or changing the server.
- Start the server and check Log Viewer if it does not return to a running state.
Players must use a matching ATLAS client version. If a modded server stops loading after an update, check whether its Workshop mods support the new build before restoring a backup.