chrome@openai-bundled plugin reinstall fails with "os error 5" (Access Denied) — stuck in repeated backup loop

What version of Codex CLI is running?

Codex CLI 0.139.0

What subscription do you have?

Chat GPT plus

Which model were you using?

gpt-5.5

What platform is your computer?

Platform: Windows Codex path: %LOCALAPPDATA%\OpenAI\Codex\bin\<version>\codex.exe Plugin version (inferred from cache directory): chrome@openai-bundled 26.609.41114 (previously 26.609.30741)

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

Windows Terminal (WSL / PowerShell)

Codex doctor report

What issue are you seeing?

Description:
I tried to remove and reinstall the chrome@openai-bundled plugin via the CLI to fix a "privileged native pipe bridge is not available" connection issue, but both plugin remove and plugin add fail with os error 5 (Access Denied). This persists even after a full system restart (Chrome and Codex fully closed before running the commands). I've attempted this same reinstall flow multiple times over the past three days, and every attempt fails the same way, leaving multiple uncleaned plugin-backup-* directories under .codex\plugins\cache\openai-bundled\ (currently 4: plugin-backup-5V3Ben, plugin-backup-mfPUDE, plugin-backup-OltIbN, plugin-backup-pA87dy).

What steps can reproduce the bug?

Steps to reproduce:
powershell$codex = Get-ChildItem "$env:LOCALAPPDATA\OpenAI\Codex\bin\*\codex.exe" |
Sort-Object LastWriteTime -Descending |
Select-Object -First 1 -ExpandProperty FullName

& $codex plugin remove chrome@openai-bundled --json
& $codex plugin add chrome@openai-bundled --json
Actual error (first attempt):
Error: failed to remove existing plugin cache entry: Access is denied. (os error 5)
Caused by:
0: failed to remove existing plugin cache entry: Access is denied. (os error 5)
1: Access is denied. (os error 5)
Actual error (subsequent retries):
Error: failed to back up plugin cache entry: Access is denied. (os error 5)
Caused by:
0: failed to back up plugin cache entry: Access is denied. (os error 5)
1: Access is denied. (os error 5)

What is the expected behavior?

Expected behavior:
plugin remove / plugin add should complete successfully and re-establish the Chrome extension's native messaging bridge, without repeatedly creating uncleanable backup folders under .codex\plugins\cache\openai-bundled\.
Additional context:
This appears related to #21862 and #22598 (plugin marketplace cache directory mismatch / Chrome plugin failing to reinstall properly). The issue persists across full system restarts with Chrome and Codex completely closed, suggesting a file permission/ownership issue with the cache directory rather than a process lock.

Additional information

_No response_