Multiple dots fail to create or continue Codex Cloud tasks with UNKNOWN; direct UI works

Environment

  • Surface: ChatGPT Web/dots → Codex Cloud
  • Codex version: Unknown
  • OS/browser: macOS; exact OS and browser versions not recorded
  • Model: Not recorded
  • Plan/authentication: ChatGPT subscription login; exact plan not included. No API key used for these requests.

Bug

I’m experiencing task-delegation failures across multiple dots. In a verified example, the dot can list Cloud environments and read existing task results, but creating or continuing tasks intermittently returns AppServerBackendRequestError with error_code: UNKNOWN.

Expected: The dot starts the authorized task or returns a specific, actionable error.

Actual: Requests fail before any new execution is visible. Directly entering an instruction into the existing Cloud task worked and produced a verified file download. Some delegated requests succeeded earlier, but the failures returned.

Reproduction

  1. Use a published Codex Cloud environment.
  2. Ask a dot to create a task or continue its existing task.
  3. Observe AppServerBackendRequestError / UNKNOWN.
  4. Check task history and listings. In our failed attempts, no corresponding new task or turn appeared.
  5. Enter an instruction directly into the existing task UI. In our October 15 test, this succeeded.

We tried minimal prompts, fresh tasks, existing-task continuation and recent-context inheritance. None restored reliable delegation.

Diagnostics

Exact error:
AppServerBackendRequestError: Something went wrong.
error_code: UNKNOWN

October 15, 2026 — all times UTC:

  • Approximately 10:18–10:19: continuation and creation failed. Request ID: a0779ca2-bb01-43b1-b478-76c229418345
  • Approximately 15:44: another creation attempt failed. Request ID: a7143718-2c6c-4d54-ae2b-ca6e3f98c1d9
  • By 15:58: a direct user instruction successfully downloaded the file; its byte count and SHA256 matched the expected values.

Frequency: Intermittent earlier, then repeated across multiple requests. I’m now observing similar problems across all my dots; the request IDs above document one dot’s failures.

A separate proxy CONNECT 403 was addressed by allowing the exact destination hostname and republishing. The subsequent direct-UI download succeeded. The remaining UNKNOWN errors happen before execution, so we have not established a shared cause.

Related reports:

Is this a known active delegation issue? Is there a supported, non-destructive recovery procedure? How can we reliably determine whether a failed request was admitted before retrying and risking duplicate work?

Private task/environment IDs and additional diagnostic details can be provided through Support.

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