If the automated WebGUI method fails, use these manual methods to ensure your server recognizes the key: Manual File Placement : Copy your file (e.g., ) directly into the folder on your USB flash drive. : Ensure there is

If your server displays a "Missing key file" or "Invalid key" error:

: Copy your /config folder (minus any illegal .key files) to a safe location.

Some cheap USB drives don't have a unique internal serial number. If Unraid says your "Flash GUID is invalid," you need to swap to a name-brand drive like a Samsung Bar or SanDisk Cruzer. AI responses may include mistakes. Learn more