Codex passes space characters as %20 when passing the file path to VSCode. This happens on macOS. For example, if the file is at ‘/Users/mainuser/Code/Xcode Projects/project.swift’ it will open the ‘/Users/mainuser/Code/Xcode%20Projects/project.swift’ file in VSCode, which does not exist.

Well, In web development and internet communication, %20 is the URL-encoded representation of a space character

See here: [image] Codex desktop app opens %20 literally in local file paths with spaces Codex I found a bug in the Codex desktop app when clicking local file links. If a file path contains spaces, the app appears to URL-encode the path and then tries to open …

Ok, we’re supposed to report bugs on github. I found an issue already filed: Issue 11102

Hi @E-Roll This is a known issue, Codex is URL-encoding spaces in file paths (%20), which breaks how VS Code resolves them. Avoiding spaces in folder names or opening files directly from within VS Code should work as a workaround.

Codex passes VSCode the wrong path for opening files

Codex

jeffvpace April 7, 2026, 1:54am 4

See here:

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Codex passes VSCode the wrong path for opening files

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