This occurs any online validation — the key fails basic local format checks.
If the format is definitely correct and the error persists, it may be a . Ensure your n8n instance is updated to the latest version, as licensing formats can change with major software updates. n8n activation key is in the wrong format
To resolve this issue, follow these steps to ensure the key is entered exactly as provided: This occurs any online validation — the key
: Copying the key directly from an email often captures trailing spaces, tabs, or line breaks that are invisible to the eye but invalidate the string. n8n activation key is in the wrong format