CodexSkin / Guides / Fix Codex Skin
Tutorial Guide · Updated 2026

Codex skin not working after an update? Here's how to recover safely

If your Codex skin stopped working, half-applied, or you just want the stock look back before a meeting — this page is the recovery path, in order of least-destructive first. The most common cause by far: a Codex update changed the app's internal renderer, and the skin's selectors no longer match. That's expected for a runtime-injection skin, it's not damage, and it's fixable in a couple of minutes. Nothing here risks your projects or config if you follow the order.

First: the safe reset order

Always work least-destructive → most:

  1. Run Verify (checks skin markers, can screenshot).

  2. Run Restore (returns to stock — non-destructive, reversible).

  3. Re-export / download the latest pack, reinstall, Verify again.

  4. Only then investigate config.

Golden rule: never hand-edit config.toml with a random template to "fix" a skin. Use Restore — it keeps a theme backup and does a clean config round-trip.

Cause 1: Broke after a Codex update (most common)

Codex Desktop updates can change private renderer structure, so old skin selectors stop matching. Fix: Run Restore → download the newest skin pack → reinstall → Verify. If a fix isn't out yet for a brand-new Codex build, keep the stock appearance until the pack updates. This is normal for any runtime-injection tool and isn't a sign anything is damaged.

Cause 2: Skin only partly appears

Native controls work but the banner/decoration is incomplete → selectors partially stale. Run Restore, reinstall the current pack, Verify. Report the exact Codex version + OS if you file an issue — version-specific detail is what gets it fixed fast.

Cause 3: Missing background asset (Mac)

If Mac reports a missing background file, re-export from the generator or download the current pack — don't create a fake file at the expected path. A known early build (1.1.x) mis-referenced a bundled theme; the current package corrects it.

Cause 4: Codex config looks wrong

Stop and run Restore. It restores backed-up appearance settings and does a clean config round-trip. Do not overwrite config.toml with an unrelated template — that turns a cosmetic hiccup into a real problem.

Cause 5: Theme string won't import

That's a different failure (color theme, not skin). Almost always a bad codeThemeId. Full fix on the dedicated page: Codex theme not showing.

How to fully uninstall

  1. Run Restore (Mac: Restore launcher / command; Windows: restore-dream-skin.ps1).

  2. Delete the skin folder to remove it completely.

Codex returns to its official appearance; your API keys, projects and model settings were never touched by the skin.

FAQ

Why did my Codex skin disappear after updating Codex?

The update changed renderer internals; reinstall the latest pack. Nothing is broken.

Is it safe to restore?

Yes — Restore is the safe, reversible path. It's designed to be run any time.

Will troubleshooting affect my API keys or projects?

No. The skin never reads or writes API keys, Base URL, or project data.

The skin still won't apply on the newest Codex build

a compatibility fix may not be released yet. Keep stock appearance until the pack updates.