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n8n errors / Config

Workflow Webhook Error: Workflow could not be started!

platform: n8n / category: Config

Cause

The production webhook URL was called but the workflow is not active, or WEBHOOK_URL points to the wrong host so n8n cannot match the request to a registered webhook.

Fix

Confirm the workflow is saved AND toggled active (required for production URLs). Set WEBHOOK_URL (or N8N_HOST + N8N_PROTOCOL) to the externally reachable base URL. Behind a reverse proxy, set N8N_TRUST_PROXY=true. Deactivate and reactivate to force webhook re-registration.

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