Error while resuming a session

What version of Codex CLI is running?

codex-cli 0.148.0

What subscription do you have?

enterprise

Which model were you using?

gpt-5.6-sol

What platform is your computer?

Darwin 25.5.0 arm64 arm

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

No response

Codex doctor report

{
  "schemaVersion": 1,
  "generatedAt": "1787242938s since unix epoch",
  "overallStatus": "warning",
  "codexVersion": "0.148.0",
  "checks": {
    "app_server.status": {
      "id": "app_server.status",
      "category": "app-server",
      "status": "ok",
      "summary": "background server is not running",
      "details": {
        "control socket": ".../.codex/app-server-control/app-server-control.sock",
        "daemon state dir": ".../.codex/app-server-daemon",
        "mode": "ephemeral",
        "pid file": ".../.codex/app-server-daemon/app-server.pid (missing)",
        "settings": ".../.codex/app-server-daemon/settings.json (missing)",
        "status": "not running",
        "update-loop pid file": ".../.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": ".../.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": ".../.codex",
        "config.toml": ".../.codex/config.toml",
        "config.toml parse": "ok",
        "cwd": ".../git/<removed>",
        "enabled feature flags": "shell_tool, view_image, unified_exec, shell_snapshot, code_mode_host, terminal_resize_reflow, sqlite, hooks, enable_request_compression, unbounded_connection_retries, multi_agent, apps, tool_search_always_defer_mcp_tools, tool_suggest, plugins, in_app_browser, in_app_updates, browser_use, browser_use_full_cdp_access, browser_use_external, computer_use, remote_plugin, plugin_sharing, image_generation, resize_all_images, item_ids, skill_mcp_dependency_install, skill_search, mentions_v2, steer, guardian_approval, goals, collaboration_modes, tool_call_mcp_elicitation, auth_elicitation, personality, fast_mode, tui_app_server, remote_compaction_v2, workspace_dependencies",
        "feature flag overrides": "none",
        "feature flags enabled": "40",
        "log dir": ".../.codex/log",
        "mcp servers": "9",
        "model": "gpt-5.6-sol",
        "model provider": "openai",
        "sqlite home": ".../.codex"
      },
      "remediation": null,
      "durationMs": 0
    },
    "git.environment": {
      "id": "git.environment",
      "category": "git",
      "status": "ok",
      "summary": "git version 2.50.1 (Apple Git-155)",
      "details": {
        ".git entry": "file -> .../git/<removed>",
        "PATH git #1": "/usr/bin/git",
        "PATH git entries": "1",
        "git branch": "ENNN-12125/visual-search-iter2",
        "git build options": "git version 2.50.1 (Apple Git-155); cpu: arm64; no commit associated with this build; sizeof-long: 8; sizeof-size_t: 8; shell-path: /bin/sh; feature: fsmonitor--daemon; libcurl: 8.7.1; zlib: 1.2.12; SHA-1: SHA1_DC; SHA-256: SHA256_BLK",
        "git exec path": "/Applications/Xcode.app/Contents/Developer/usr/libexec/git-core",
        "git version": "git version 2.50.1 (Apple Git-155)",
        "repo detected": "true",
        "repo root": ".../git/<removed>",
        "selected git": "/usr/bin/git"
      },
      "remediation": null,
      "durationMs": 58
    },
    "installation": {
      "id": "installation",
      "category": "install",
      "status": "ok",
      "summary": "installation looks consistent",
      "details": {
        "PATH codex #1": ".../.local/bin/codex",
        "PATH codex #2": ".../.local/bin/codex",
        "PATH codex entries": "2",
        "current executable": ".../.local/bin/codex",
        "install context": "standalone (unix, package .../.codex/packages/standalone/releases/0.148.0-aarch64-apple-darwin, bin .../.codex/packages/standalone/releases/0.148.0-aarch64-apple-darwin/bin, resources .../.codex/packages/standalone/releases/0.148.0-aarch64-apple-darwin/codex-resources, path .../.codex/packages/standalone/releases/0.148.0-aarch64-apple-darwin/codex-path)",
        "managed by bun": "false",
        "managed by npm": "false",
        "managed by pnpm": "false",
        "managed package root": "not set"
      },
      "remediation": null,
      "durationMs": 7
    },
    "mcp.config": {
      "id": "mcp.config",
      "category": "mcp",
      "status": "ok",
      "summary": "MCP configuration is locally consistent",
      "details": {
        "configured servers": "9",
        "disabled servers": "1",
        "stdio servers": "5",
        "streamable_http servers": "4"
      },
      "remediation": null,
      "durationMs": 219
    },
    "network.env": {
      "id": "network.env",
      "category": "network",
      "status": "ok",
      "summary": "network-related environment looks readable",
      "details": {
        "SSL_CERT_FILE": "readable file /Library/Application Support/Netskope/STAgent/download/nscacert_combined.pem",
        "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 404)",
        "reachability mode": "ChatGPT auth"
      },
      "remediation": null,
      "durationMs": 196
    },
    "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",
        "provider name": "OpenAI",
        "proxy env vars": "none",
        "reasoning header": "false",
        "server model present": "false",
        "supports websockets": "true",
        "wire API": "responses"
      },
      "remediation": null,
      "durationMs": 806
    },
    "runtime.provenance": {
      "id": "runtime.provenance",
      "category": "runtime",
      "status": "ok",
      "summary": "running standalone on macos-aarch64",
      "details": {
        "commit": "unknown",
        "current executable": ".../.local/bin/codex",
        "install method": "standalone (unix, package .../.codex/packages/standalone/releases/0.148.0-aarch64-apple-darwin, bin .../.codex/packages/standalone/releases/0.148.0-aarch64-apple-darwin/bin, resources .../.codex/packages/standalone/releases/0.148.0-aarch64-apple-darwin/codex-resources, path .../.codex/packages/standalone/releases/0.148.0-aarch64-apple-darwin/codex-path)",
        "platform": "macos-aarch64",
        "version": "0.148.0"
      },
      "remediation": null,
      "durationMs": 0
    },
    "runtime.search": {
      "id": "runtime.search",
      "category": "search",
      "status": "ok",
      "summary": "search is OK (bundled)",
      "details": {
        "search command": "/.../.codex/packages/standalone/releases/0.148.0-aarch64-apple-darwin/codex-path/rg",
        "search command readiness": "file exists",
        "search provider": "bundled"
      },
      "remediation": null,
      "durationMs": 0
    },
    "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": ".../.codex/tmp/arg0/codex-arg0LFlh1x/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": ".../.codex (dir)",
        "active rollout files": "80 files, 88898176 total bytes, 1111227 average bytes",
        "archived rollout files": "0 files, 0 total bytes, 0 average bytes",
        "goals DB": ".../.codex/goals_1.sqlite (file)",
        "goals DB integrity": "ok",
        "log DB": ".../.codex/logs_2.sqlite (file)",
        "log DB integrity": "ok",
        "log dir": ".../.codex/log (dir)",
        "memories DB": ".../.codex/memories_1.sqlite (file)",
        "memories DB integrity": "ok",
        "queue DB": ".../.codex/queue_1.sqlite (file)",
        "queue DB integrity": "ok",
        "sqlite home": ".../.codex (dir)",
        "standalone release cache": "4 entries in .../.codex/packages/standalone/releases",
        "state DB": ".../.codex/state_5.sqlite (file)",
        "state DB integrity": "ok",
        "thread history DB": ".../.codex/thread_history_1.sqlite (file)",
        "thread history DB integrity": "ok"
      },
      "remediation": null,
      "durationMs": 200
    },
    "state.rollout_db_parity": {
      "id": "state.rollout_db_parity",
      "category": "threads",
      "status": "ok",
      "summary": "rollout files and state DB thread inventory agree",
      "details": {
        "default model provider": "openai",
        "rollout DB active files": "80",
        "rollout DB active rows": "80",
        "rollout DB archive mismatches": "0",
        "rollout DB archived files": "0",
        "rollout DB archived rows": "0",
        "rollout DB duplicate DB paths": "0",
        "rollout DB duplicate rollout thread ids": "0",
        "rollout DB malformed file names": "0",
        "rollout DB missing active rows": "0",
        "rollout DB missing archived rows": "0",
        "rollout DB model providers": "openai=80",
        "rollout DB rows": "80",
        "rollout DB scan cap reached": "false",
        "rollout DB scan errors": "0",
        "rollout DB sources": "vscode=42, cli=38",
        "rollout DB stale rows": "0"
      },
      "remediation": null,
      "durationMs": 98
    },
    "system.disk": {
      "id": "system.disk",
      "category": "disk",
      "status": "ok",
      "summary": "sufficient free disk space (34.8 GiB)",
      "details": {
        "CODEX_HOME available": "34.8 GiB",
        "failure threshold": "1.0 GiB",
        "warning threshold": "5.0 GiB",
        "worktree available": "34.8 GiB"
      },
      "remediation": null,
      "durationMs": 0
    },
    "system.environment": {
      "id": "system.environment",
      "category": "system",
      "status": "ok",
      "summary": "OS language en-US",
      "details": {
        "EDITOR": "not set",
        "LANG": "C.UTF-8",
        "LC_CTYPE": "UTF-8",
        "VISUAL": "not set",
        "os": "Mac OS 26.5.2 [64-bit]",
        "os language": "en-US",
        "os type": "Mac OS",
        "os version": "26.5.2"
      },
      "remediation": null,
      "durationMs": 4
    },
    "terminal.env": {
      "id": "terminal.env",
      "category": "terminal",
      "status": "warning",
      "summary": "height 15 rows - content may scroll off (recommended >=24)",
      "details": {
        "color output": "enabled",
        "effective locale": "UTF-8",
        "stderr is terminal": "true",
        "stdin is terminal": "true",
        "stdout is terminal": "true",
        "terminal": "Apple Terminal",
        "terminal size": "209x15"
      },
      "issues": [
        {
          "severity": "warning",
          "cause": "height 15 rows - content may scroll off (recommended >=24)",
          "measured": "209 x 15",
          "expected": ">= 24 rows",
          "remedy": "resize the window to at least 24 rows",
          "fields": [
            "terminal size"
          ]
        }
      ],
      "remediation": null,
      "durationMs": 0
    },
    "terminal.title": {
      "id": "terminal.title",
      "category": "title",
      "status": "ok",
      "summary": "terminal title default",
      "details": {
        "terminal title activity": "true",
        "terminal title items": "activity, project-name",
        "terminal title project source": "git repo root",
        "terminal title project value": "<removed>",
        "terminal title source": "default"
      },
      "remediation": null,
      "durationMs": 0
    },
    "updates.status": {
      "id": "updates.status",
      "category": "updates",
      "status": "ok",
      "summary": "update configuration is locally consistent",
      "details": {
        "cached latest version": "0.148.0",
        "check for update on startup": "true",
        "last checked at": "2026-08-19T20:46:32.920228Z",
        "latest version": "0.148.0",
        "latest version status": "current version is not older",
        "update action": "standalone installer",
        "version cache": ".../.codex/version.json"
      },
      "remediation": null,
      "durationMs": 636
    }
  }
}

What issue are you seeing?

After trying to resume a session, getting this error:

ailed to resume session from .../.codex/sessions/2026/08/18/rollout-2026-08-18T22-36-50-01a01885-b2dd-71f1-9ea1-5131ee51f9b8.jsonl: thread/resume failed during TUI bootstrap: thread/resume
failed: thread 01a01885-b2dd-71f1-9ea1-5131ee51f9b8 already has an active writer (code -32600)

What steps can reproduce the bug?

Uploaded thread: 01a01fef-38fe-7451-9d1b-eae5a8cceb8e

What is the expected behavior?

the session will resumed properly

Additional information

No response

The report names no source file, test, or resume entry point. Start by reproducing session resumption with Codex CLI 0.148.0 on macOS arm64 using the supplied doctor report, then trace the failure from the CLI's resume command; done means the reported session resumes without the error.