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    WhatsApp Session Expired in Envoy

    Messages fail with: "Error validating access token: Session has expired."

    2 min readUpdated 9 Apr 2026
    General WhatsApp guide available at /learn/whatsapp
    1
  1. In Envoy, go to Settings > Channels > WhatsApp
    2. 2
  2. Click Reauthorize
    3. 3
  3. Log in with the admin Facebook account
    4. 4
  4. Grant all permissions
    5. 5
  5. Test by sending a message

    6. Some Envoy accounts experience repeated notifications (30+) for the same session expiry event. This is a known bug: the expiry itself is real, but the notification count is incorrect. You only need to reauthorize once.

    • Facebook session naturally timed out
    • Admin logged out of Facebook on another device
    • Admin changed their Facebook password
    • 2FA settings were updated
    • Meta triggered a security refresh
    • Use a dedicated admin account. It shouldn't be shared for personal Facebook use
    • Don't change the admin account's password or 2FA without reauthorising in Envoy afterward
    • Check your Envoy channel status after any Facebook account changes
    • Set a monthly calendar reminder to verify the channel still shows "Connected"

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