Edit configuration files

Fable's instance Files section is a read-only browser. To edit a configuration file, stop Minecraft and use your operating system's file manager and a trusted text editor.

Locate and edit a file

1. Select the intended instance in Library and review its configured game directory under Instance Settings.
2. Stop Minecraft for that instance and wait for downloads or loader installation to finish.
3. Open that game directory in your file manager. Configuration files are often in a config folder, but the location and format depend on the mod or feature that owns the setting.
4. Copy the file to a backup location before editing. Open the copy in a plain-text editor, make one change, and save it without changing its filename or extension.
5. Return to Fable and check the instance's Files view. Launch the instance and verify the change before making another.

Do not edit files under Fable's application data or instance metadata unless a specific guide instructs you to. Do not use a word processor that may reformat plain text. Configuration changes can prevent a loader or mod from starting; keep the backup so you can restore the original.

For launcher-managed controls, use Instance Settings, Settings → Java & Memory, or the relevant Content screen instead of editing files manually. See Game directory and instance files and Collecting logs.