Troubleshooting the "Activation key has already been used on this instance" n8n Error
If you are spinning up and tearing down instances frequently (e.g., for testing workflows locally) and reusing the same license key, n8n's licensing server might rate-limit your activations. activation key has already been used on this instance n8n
You need to send a request to the license endpoint of your new n8n instance. Troubleshooting the "Activation key has already been used
If that fails, you may need to access the container's internal database. If you are using the default SQLite: activation key has already been used on this instance n8n