codex no longer works

[puchtec]

What version of Codex CLI is running?

codex-cli 0.134.0

What subscription do you have?

Enterprise

Which model were you using?

gpt-5.4-mini

What platform is your computer?

Darwin 25.5.0 arm64 arm

What terminal emulator and version are you using (if applicable)?

iTerm2

Codex doctor report

{
  "schemaVersion": 1,
  "generatedAt": "1779893619s since unix epoch",
  "overallStatus": "ok",
  "codexVersion": "0.134.0",
  "checks": {
    "app_server.status": {
      "id": "app_server.status",
      "category": "app-server",
      "status": "ok",
      "summary": "background server is not running",
      "details": {
        "control socket": "/Users/frank.puechl/.codex/app-server-control/app-server-control.sock",
        "daemon state dir": "/Users/frank.puechl/.codex/app-server-daemon",
        "mode": "ephemeral",
        "pid file": "/Users/frank.puechl/.codex/app-server-daemon/app-server.pid (missing)",
        "settings": "/Users/frank.puechl/.codex/app-server-daemon/settings.json (missing)",
        "status": "not running",
        "update-loop pid file": "/Users/frank.puechl/.codex/app-server-daemon/app-server-updater.pid (missing)"
      },
      "remediation": null,
      "durationMs": 0
    },
    "auth.credentials": {
      "id": "auth.credentials",
      "category": "auth",
      "status": "ok",
      "summary": "auth is configured",
      "details": {
        "auth file": "/Users/frank.puechl/.codex/auth.json",
        "auth storage mode": "File",
        "stored API key": "false",
        "stored ChatGPT tokens": "true",
        "stored agent identity": "false",
        "stored auth mode": "chatgpt"
      },
      "remediation": null,
      "durationMs": 0
    },
    "config.load": {
      "id": "config.load",
      "category": "config",
      "status": "ok",
      "summary": "config loaded",
      "details": {
        "CODEX_HOME": "/Users/frank.puechl/.codex",
        "config.toml": "/Users/frank.puechl/.codex/config.toml",
        "config.toml parse": "ok",
        "cwd": "/Users/frank.puechl",
        "enabled feature flags": "shell_tool, unified_exec, shell_snapshot, terminal_resize_reflow, sqlite, hooks, enable_request_compression, multi_agent, apps, tool_suggest, plugins, in_app_browser, browser_use, browser_use_external, computer_use, plugin_sharing, image_generation, skill_mcp_dependency_install, steer, guardian_approval, goals, collaboration_modes, tool_call_mcp_elicitation, personality, fast_mode, tui_app_server, workspace_dependencies",
        "feature flag overrides": "none",
        "feature flags enabled": "27",
        "log dir": "/Users/frank.puechl/.codex/log",
        "mcp servers": "3",
        "model": "gpt-5.4-mini",
        "model provider": "openai",
        "sqlite home": "/Users/frank.puechl/.codex"
      },
      "remediation": null,
      "durationMs": 0
    },
    "installation": {
      "id": "installation",
      "category": "install",
      "status": "ok",
      "summary": "installation looks consistent",
      "details": {
        "PATH codex #1": "/opt/homebrew/bin/codex",
        "current executable": "/opt/homebrew/bin/codex",
        "install context": "brew",
        "managed by bun": "false",
        "managed by npm": "false",
        "managed package root": "not set"
      },
      "remediation": null,
      "durationMs": 5
    },
    "mcp.config": {
      "id": "mcp.config",
      "category": "mcp",
      "status": "ok",
      "summary": "MCP configuration is locally consistent",
      "details": {
        "configured servers": "3",
        "disabled servers": "0",
        "stdio servers": "1",
        "streamable_http servers": "2"
      },
      "remediation": null,
      "durationMs": 780
    },
    "network.env": {
      "id": "network.env",
      "category": "network",
      "status": "ok",
      "summary": "network-related environment looks readable",
      "details": {
        "proxy env vars": "none"
      },
      "remediation": null,
      "durationMs": 0
    },
    "network.provider_reachability": {
      "id": "network.provider_reachability",
      "category": "reachability",
      "status": "ok",
      "summary": "active provider endpoints are reachable over HTTP",
      "details": {
        "ChatGPT base URL": "https://chatgpt.com/backend-api/ reachable (HTTP 403)",
        "reachability mode": "ChatGPT auth"
      },
      "remediation": null,
      "durationMs": 217
    },
    "network.websocket_reachability": {
      "id": "network.websocket_reachability",
      "category": "websocket",
      "status": "ok",
      "summary": "Responses WebSocket handshake succeeded",
      "details": {
        "DNS": "2 IPv4, 0 IPv6, first IPv4",
        "auth mode": "chatgpt",
        "connect timeout": "15000 ms",
        "endpoint": "wss://chatgpt.com/backend-api/<redacted>",
        "handshake result": "HTTP 101 Switching Protocols",
        "model provider": "openai",
        "models etag present": "true",
        "provider name": "OpenAI",
        "proxy env vars": "none",
        "reasoning header": "false",
        "server model present": "false",
        "supports websockets": "true",
        "wire API": "responses"
      },
      "remediation": null,
      "durationMs": 671
    },
    "runtime.provenance": {
      "id": "runtime.provenance",
      "category": "runtime",
      "status": "ok",
      "summary": "running brew on macos-aarch64",
      "details": {
        "commit": "unknown",
        "current executable": "/opt/homebrew/bin/codex",
        "install method": "brew",
        "platform": "macos-aarch64",
        "version": "0.134.0"
      },
      "remediation": null,
      "durationMs": 0
    },
    "runtime.search": {
      "id": "runtime.search",
      "category": "search",
      "status": "ok",
      "summary": "search is OK (system)",
      "details": {
        "search command": "rg",
        "search command readiness": "ripgrep 15.1.0",
        "search provider": "system"
      },
      "remediation": null,
      "durationMs": 303
    },
    "sandbox.helpers": {
      "id": "sandbox.helpers",
      "category": "sandbox",
      "status": "ok",
      "summary": "sandbox configuration is readable",
      "details": {
        "approval policy": "OnRequest",
        "codex-linux-sandbox helper": "none",
        "execve wrapper helper": "/Users/frank.puechl/.codex/tmp/arg0/codex-arg0DxDeCN/codex-execve-wrapper",
        "filesystem sandbox": "restricted",
        "network sandbox": "restricted"
      },
      "remediation": null,
      "durationMs": 0
    },
    "state.paths": {
      "id": "state.paths",
      "category": "state",
      "status": "ok",
      "summary": "state paths and databases are inspectable",
      "details": {
        "CODEX_HOME": "/Users/frank.puechl/.codex (dir)",
        "active rollout files": "335 files, 67435827 total bytes, 201300 average bytes",
        "archived rollout files": "130 files, 42586304 total bytes, 327586 average bytes",
        "goals DB": "/Users/frank.puechl/.codex/goals_1.sqlite (file)",
        "goals DB integrity": "ok",
        "log DB": "/Users/frank.puechl/.codex/logs_2.sqlite (file)",
        "log DB integrity": "ok",
        "log dir": "/Users/frank.puechl/.codex/log (dir)",
        "sqlite home": "/Users/frank.puechl/.codex (dir)",
        "state DB": "/Users/frank.puechl/.codex/state_5.sqlite (file)",
        "state DB integrity": "ok"
      },
      "remediation": null,
      "durationMs": 283
    },
    "terminal.env": {
      "id": "terminal.env",
      "category": "terminal",
      "status": "ok",
      "summary": "terminal metadata was detected",
      "details": {
        "COLORFGBG": "0;15",
        "COLORTERM": "truecolor",
        "TERMINFO_DIRS entry": [
          "/Applications/iTerm.app/Contents/Resources/terminfo (dir)",
          "/usr/share/terminfo (dir)"
        ],
        "TERM_PROGRAM": "iTerm.app",
        "color output": "enabled",
        "effective locale": "en_DE.UTF8",
        "stderr is terminal": "true",
        "stdin is terminal": "true",
        "stdout is terminal": "true",
        "terminal": "iTerm2",
        "terminal size": "222x66",
        "terminal version": "3.6.10"
      },
      "remediation": null,
      "durationMs": 0
    },
    "updates.status": {
      "id": "updates.status",
      "category": "updates",
      "status": "ok",
      "summary": "update configuration is locally consistent",
      "details": {
        "cached latest version": "0.134.0",
        "check for update on startup": "true",
        "last checked at": "2026-05-27T05:28:10.045564Z",
        "latest version": "0.134.0",
        "latest version status": "current version is not older",
        "update action": "brew upgrade --cask codex",
        "version cache": "/Users/frank.puechl/.codex/version.json"
      },
      "remediation": null,
      "durationMs": 94
    }
  }
}

What issue are you seeing?

⚠ Falling back from WebSockets to HTTPS transport. stream disconnected before completion: An error occurred while processing your request. You can retry your request, or contact us through our help center at help.openai.com if the
error persists. Please include the request ID 0ecf801c-603d-4410-a726-b986df50c0f8 in your message.

■ stream disconnected before completion: An error occurred while processing your request. You can retry your request, or contact us through our help center at help.openai.com if the error persists. Please include the request ID
cb632f7f-ef63-4547-a9a9-844c0da170ad in your message.

What steps can reproduce the bug?

Uploaded thread: 019e69e5-9c79-7e50-b6c8-e09978aa6f13

What is the expected behavior?

Regular processing.

Additional information

No response

[MisterRound]

Widespread, connected to this issue: #24260

[puchtec]

Seems to be related to model gpt-5.4-mini