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Telegram Webhook Not Triggered — Debug Tool

This page is an infrastructure entry for developers debugging Telegram Bot webhooks.

What this tool checks

  • Webhook URL reachability (HTTP status)
  • HTTPS/TLS validity
  • Typical reverse proxy / CDN blocking patterns
  • Telegram API configuration mismatch signals

When you need it

  • Telegram updates are not reaching your bot
  • You set webhook successfully but nothing arrives
  • Your worker/server receives no requests

Step-by-step diagnosis

  1. Verify your webhook URL is publicly reachable (no auth wall, no geo block).
  2. Confirm TLS certificate is valid and full chain is served.
  3. Confirm webhook is set to the exact URL you expect.
  4. Check proxy/CDN rules that might block Telegram IP ranges.

Common causes

  • Wrong webhook URL (typo, path mismatch)
  • Invalid certificate / missing intermediate
  • Cloudflare / WAF blocking
  • Your handler returns non-200 responses

Verdict

If this bot is part of a production workflow, do a responsibility check first: