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‘This session stopped answering automated steps’ (session_unresponsive)

You might be here because: “This session stopped answering automated steps” · “this session stopped answering automated steps (the live view may still show the page), so this step was not sent — end this session and launch a new one” · “This session stopped answering automated steps (the live view may still show the page), so I stopped and the task is not finished.” · “This session stopped answering automated steps (the live view may still show the page), so nothing was done with this message.” · “This session stopped answering the steps sent to it” · “session_unresponsive” · “the live view still works but the AI says the session stopped” · “the session is frozen” · “every step fails straight away” · “continue does nothing”

Short answer

This session had already failed to answer a step — an earlier step got no answer in time, or the browser’s own check on the page got no answer — and a quick check sent just before the next step got no answer either. So that step was not sent, and the task stopped rather than wait on a session that is not answering. The browser may still be running: the live view can go on showing the page, and look normal, while the steps sent to the session go unanswered. End this session and launch a new one. This check does not end the session for you: it stays open, and counts towards the sessions you can run at once, until you end it or it closes on its own later (for example after inactivity). End it yourself to free the slot now.

Check first

  • Is it this one session? Other sessions are not affected.
  • Did “continue” or a new message fail the same way? Each new message first runs the same quick check, and its steps run only if the session answers it.
  • Does the live view still look fine? That is expected here: the live view streams the screen, and what stopped is the session answering the steps sent to it.

Likely causes and fixes

  1. A failed step titled “This session stopped answering automated steps” in the desktop app’s AI view, with the reason “this session stopped answering automated steps (the live view may still show the page), so this step was not sent — end this session and launch a new one”. There is no Continue from here, because continuing in the same session will not help. Press Stop on the session’s row in the Sessions tab, then launch the profile again.
  2. The task ends with “This session stopped answering automated steps (the live view may still show the page), so I stopped and the task is not finished. End this session and launch a new one to carry on.” Same fix.
  3. “This session stopped answering automated steps (the live view may still show the page), so nothing was done with this message. End this session and launch a new one to carry on.” — the session did not answer before anything was planned, so nothing was done. Same fix.
  4. Back or Forward says “This session stopped answering the steps sent to it (the live view may still show the page), so the step was not sent. End this session and launch a new one.” Same fix.
  5. From code. The failed step has diagnosis.category session_unresponsive and retryable: false, and the turn’s notice_reason is session_unresponsive (a turn refused before planning answers refuse with the same notice_reason). It is not an error status: the message answers 200. Close the session (DELETE /v1/agent-sessions/{id}) and create a new one.
  6. Launching again says the profile is already in use. A profile runs in one session at a time, so end the stuck session first.

If it still fails

If new sessions on the same profile and page stop answering again and again, press Talk to a person in this chat (or open Help) and include the session ids, the page address and the time it happened.