KnownFix — Codex CLI known issues

[Codex CLI] [BUG] Codex 26.1021.22027 fails to start UI in VS Code 1.143.1 on Windows

Sat, 24 Oct 2026 09:46:40 +0000

26.1021.22027 ChatGPT Plus Visual Studio Code 1.143.1 (Windows) Microsoft Windows NT 10.0.19045.0 x64 Codex IDE extension version 26.1021.22027 fails to initialize its user interface in Visual Studio Code 1.143.1 on Windows. When opening…

Workaround (quoted from issue body): Confirmed workaround: Downgrading the Codex extension from `26.1021.22027` to `26.1007.21434` immediately resolved the issue.

Severity (auto): critical · 19 reactions · 31 comments · more Codex CLI issues

[Codex CLI] [macOS] “More details” missing from response selection menu after update to 26.1007.21159

Fri, 09 Oct 2026 08:53:31 +0000

ChatGPT desktop 26.1007.21159, build 20052. The app’s updater reports that this version is current. ChatGPT Pro. macOS 26.6.2, build 25G83. After the latest update, the contextual menu shown when selecting assistant response text no longer…

Severity (auto): medium · 21 reactions · 19 comments · more Codex CLI issues

[Codex CLI] Background daemon auto-update drains active session and leaves daemon incompatible with current Codex client

Wed, 07 Oct 2026 16:52:34 +0000

An active Codex session suddenly failed with: I did not update Codex or change feature settings while the session was running. Afterwards, attempting to resume the session produced: Importantly, this is not specific to the crashed session…

Severity (auto): medium · 20 reactions · 1 comments · more Codex CLI issues

[Codex CLI] Windows app 26.1002.51308: sandbox setup fails with sharing violation when validating its own active runtime

Wed, 07 Oct 2026 06:33:31 +0000

Title: Windows app 26.1002.51308: sandbox setup fails with sharing violation when validating its own active runtime After updating the Windows Codex app to 26.1002.51308 (build 13417), all command execution fails before the requested…

Severity (auto): high · 31 reactions · 124 comments · more Codex CLI issues

[Codex CLI] Windows sandbox fails opening running node_repl.exe for ACL update (error 32); Computer Use and shell blocked

Wed, 07 Oct 2026 05:36:39 +0000

On Windows 11, Computer Use cannot initialize and ordinary sandboxed shell commands fail before execution with helperunknownerror: setup refresh had errors. The sandbox log identifies an error 32 (sharing violation) when opening the…

Severity (auto): medium · 11 reactions · 40 comments · more Codex CLI issues

[Codex CLI] Dot cannot create or follow up with local Codex tasks in saved projects

Wed, 30 Sep 2026 20:11:09 +0000

A dot can start a local Codex task on a connected desktop, but its task-creation tool cannot select an existing saved Codex App project. A local Codex task can create a thread in that project, yet the dot then cannot read or message that…

Severity (auto): medium · 12 reactions · 61 comments · more Codex CLI issues

[Codex CLI] [Windows] dot-started local tasks lack Computer Use tools while ordinary local Codex sessions work

Wed, 30 Sep 2026 03:09:53 +0000

ChatGPT desktop on Windows, with an About-dialog release date of September 29, 2026. The user confirmed the app is up to date. Installed Windows package version: 26.928.1915.0 (read from local package metadata, not the About-dialog display…

Severity (auto): medium · 26 reactions · 97 comments · more Codex CLI issues

[Codex CLI] Codex Desktop: exec_command fails in WSL-style session with os error 2, including pwd in /tmp, after restart

Tue, 29 Sep 2026 21:01:10 +0000

Windows package version observed in app logs: 26.928.1915.0. Desktop client version reported in runtime logs: 26.928.20755. Bundled WSL CLI verified with --version: codex-cli 0.159.0. Not provided. Codex Desktop on Windows, with the agent…

Severity (auto): medium · 13 reactions · 10 comments · more Codex CLI issues

[Codex CLI] Android 1.2026.265 (27): Codex Remote repeatedly returns to “Authorize this phone” after successful browser authorization

Sun, 27 Sep 2026 19:52:49 +0000

I cannot finish pairing my Android phone with Codex running in WSL. The phone opens the browser login, recognizes the correct ChatGPT account, and asks me to authorize access. After I authorize, it briefly shows “Pairing…” and returns to…

Severity (auto): medium · 21 reactions · 38 comments · more Codex CLI issues

[Codex CLI] Codex Remote pairing fails on Android

Sun, 27 Sep 2026 19:30:04 +0000

Codex Remote pairing fails on Android. ChatGPT mobile version 1.2026.265 and the Windows desktop app use the same verified personal account. “Allow connections” is enabled on the PC. After scanning a fresh QR code, the phone shows…

Severity (auto): medium · 27 reactions · 55 comments · more Codex CLI issues

[Codex CLI] [Android][Remote] "Authorize this phone" loops after the desktop switches ChatGPT accounts: stale cross-account environment, two pending enrollments per attempt

Sat, 26 Sep 2026 22:18:20 +0000

After a desktop app was signed into account B and then back into account A on the same machine, pairing an Android phone with account A loops forever. After scanning the QR code, tapping Authorize this phone and completing the browser…

Severity (auto): medium · 29 reactions · 33 comments · more Codex CLI issues

[Codex CLI] Managed app-server runs hooks with the first client's TMUX_PANE/TMUX, misattributing hook events to the wrong terminal pane (0.157 regression)

Sat, 26 Sep 2026 18:00:55 +0000

Since 0.157 the TUI talks to a shared codex app-server --managed-daemon (one per CODEXHOME), and lifecycle hooks (UserPromptSubmit, Stop, PostToolUse) run inside that daemon. The daemon inherits the environment of whichever TUI first…

Severity (auto): high · 23 reactions · 19 comments · more Codex CLI issues

[Codex CLI] [Windows] Codex Desktop 26.924.1866.0 stuck on startup spinner until app-server codex.exe is terminated

Sat, 26 Sep 2026 02:18:57 +0000

26.924.1866.0 (Windows package version; the app does not load reliably enough to open About Codex) ChatGPT Plus Microsoft Windows NT 10.0.19045.0 x64 Codex Desktop remains indefinitely on the startup spinner before showing projects or…

Severity (auto): medium · 16 reactions · 29 comments · more Codex CLI issues

[Codex CLI] unexpected status 401 Unauthorized issue

Fri, 25 Sep 2026 22:54:35 +0000

unexpected status 401 Unauthorized: Incorrect API key provided: sk-svcacfvMA. You can find your API key at https://platform.openai.com/account/api-keys., url: https://chatgpt.com/backend-api/codex/responses, cf-ray: a40d95aa6bfcb8db-SEA…

Severity (auto): high · 105 reactions · 97 comments · more Codex CLI issues

[Codex CLI] blank windows terminal window

Fri, 25 Sep 2026 12:01:03 +0000

After updating Codex on September 25, 2026, a blank Windows Terminal window for codex-code-mode-host.exe repeatedly opens and closes while I use Codex. This did not happen before the update. The window title points to the app-server-daemon…

Severity (auto): medium · 23 reactions · 16 comments · more Codex CLI issues

[Codex CLI] [BUG] Codex CLI 0.157.0 fails to start on Windows with daemon privilege error (0.156.1 works)

Fri, 25 Sep 2026 09:34:59 +0000

Codex CLI 0.157.0 fails to start on Windows with the following error: Downgrading to version 0.156.1 resolves the issue. Install Codex CLI 0.157.0 on Windows: Launch Codex CLI: Observe the daemon privilege error. Codex CLI should start…

Workaround (quoted from issue body): Downgrading to version 0.156.1 restores normal operation:

Severity (auto): critical · 50 reactions · 64 comments · more Codex CLI issues

[Codex CLI] Windows remote-control daemon spawns visible console windows for tool and MCP child processes

Mon, 21 Sep 2026 06:22:47 +0000

On Windows, the managed remote-control app-server daemon launches tool-runtime and MCP child processes in visible console windows. Starting or opening a session through codex agents produces a cascade of black windows for noderepl.exe…

Severity (auto): medium · 23 reactions · 21 comments · more Codex CLI issues

[Codex CLI] Linux sandbox rejects valid nsfs mount roots from snapd: `mountinfo path is not absolute`

Thu, 17 Sep 2026 04:31:38 +0000

Codex 0.155.0-alpha.15 fails before executing any filesystem-restricted command on a native Ubuntu host when /proc/self/mountinfo contains valid nsfs entries created by snapd. The failure is: The affected mountinfo entries have an nsfs…

Severity (auto): medium · 21 reactions · 24 comments · more Codex CLI issues

[Codex CLI] App-server queued follow-up no longer exists

Sat, 12 Sep 2026 11:08:51 +0000

26.908.40834 Darwin 25.6.0 arm64 arm Trying to queue task after editing it once. So I had a queued task, then decided to edit it, and then I start to get this error. Submit queue, or submit queue edit it and try to submit again Queue being…

Severity (auto): medium · 65 reactions · 26 comments · more Codex CLI issues

[Codex CLI] [Codex Desktop] Editing and resending a queued message triggers "App-server queued follow-up no longer exists"

Fri, 11 Sep 2026 09:12:46 +0000

Installed Codex Desktop Windows package: 26.903.9818.0, verified locally with Get-AppxPackage. The executable used by the currently running Codex backend reports codex-cli 0.153.4 via --version. These were collected on September 11, 2026…

Severity (auto): medium · 54 reactions · 48 comments · more Codex CLI issues

[Codex CLI] [Windows][WSL][26.825.31414] Project creation and removal fail after switching Agent Environment to WSL

Fri, 28 Aug 2026 06:39:10 +0000

26.825.31414 Microsoft Windows NT 10.0.26200.0 x64 ChatGPT / Powered by Codex & OWL Release date shown in About: August 28, 2026 Windows 11 x64 with WSL2 / Ubuntu. Project management works correctly when the Codex Agent Environment is set…

Severity (auto): high · 70 reactions · 84 comments · more Codex CLI issues

[Codex CLI] Regression: encrypted MultiAgentV2 messages remove readable task audit trail

Sat, 13 Jun 2026 08:06:35 +0000

Upstream main after #26210 (Encrypt multi-agent v2 message payloads, merged 2026-06-05). This appears to affect versions that include that change and enable MultiAgentV2 (post-0.137.0). Not subscription-specific. Not model-specific. This…

Severity (auto): high · 151 reactions · 40 comments · more Codex CLI issues

[Codex CLI] Codex Desktop for macOS repeatedly triggers `syspolicyd` / `trustd` CPU and memory runaway

Mon, 01 Jun 2026 23:59:29 +0000

Codex Desktop: 26.527.60818 Codex build: 3437 Darwin 25.5.0 arm64 arm Codex Desktop for macOS triggers a persistent macOS Gatekeeper/SystemPolicy loop after launch. With Codex closed, the system is quiet. As soon as Codex Desktop is…

Severity (auto): high · 455 reactions · 90 comments · more Codex CLI issues

[Codex CLI] Codex does not auto-refresh routed MCP OAuth tokens even when a refresh token is stored

Thu, 09 Apr 2026 22:27:30 +0000

Codex persists a refreshtoken for a routed MCP server in ~/.codex/.credentials.json, but it does not automatically refresh the access token when the token expires. As a result, once the access token expires: MCP tool calls start failing…

Severity (auto): medium · 69 reactions · 38 comments · more Codex CLI issues