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No such file or directory (os error 2) - Codex

Quick fix

Change the model_catalog_json absolute path in config.toml to the relative cc-switch-model-catalog.json, or upgrade cc-switch.

Symptom

Section titled “Symptom”
Error output
Error loading configuration: No such file or directory (os error 2)

Cause

Section titled “Cause”

Running cc-switch on a Windows host and configuring a third-party provider (DeepSeek, for instance) for Codex inside WSL, cc-switch generates a Windows UNC absolute path in config.toml automatically (\\wsl.localhost\Ubuntu\home\user\.codex\cc-switch-model-catalog.json, for example).

Because the WSL Linux system calls cannot resolve that Windows UNC path, Codex cannot find the model catalog file at startup and throws the os error 2.

Fix

Section titled “Fix”

  1. Upgrade cc-switch to a version containing the #3614 fix, which writes a relative filename automatically.

  2. Or edit the Codex config file inside WSL by hand and change the model_catalog_json value to a relative path.

    ~/.codex/config.toml
    model_catalog_json = '\\wsl.localhost\Ubuntu-24.04\home\xxxxx\.codex\cc-switch-model-catalog.json'
    model_catalog_json = 'cc-switch-model-catalog.json'

Affected Versions

Section titled “Affected Versions”
ToolCodex
VersionUnknown
PlatformsWindows

Source Issues

Section titled “Source Issues”

This page is distilled from 2 real issues

FAQ

Section titled “FAQ”
Why does cc-switch generate a path starting with \\wsl.localhost?
Because cc-switch runs on the Windows host and by default gets the WSL path from the Windows point of view (UNC format), which the Linux environment inside WSL cannot read directly.
Can Codex find the file once it is a relative path?
Yes. The Codex CLI resolves the model_catalog_json relative path against the directory the config file is in, so cc-switch-model-catalog.json works directly.
Section titled “Related problems”
AbsolutePathBuf deserialized without a base pathOn Codex for macOS, relative paths written by cc-switch cause this error. Change `model_catalog_json` in `~/.codex/config.toml` to an absolute path.2 issues mergedunexpected status 502 Bad Gateway CodexSet 127.0.0.1 to direct in your proxy software, or configure NO_PROXY in the Codex environment, so the local proxy is not intercepted.7 issues mergedzsh:1: command not found: claudeUpgrade cc-switch to v3.16.4 or newer, fixing PATH not loading when the terminal launches, or switch to the system default terminal for now.3 issues merged

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