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Account does not exist: old UUID Codex

Quick fix

Upgrade to v3.20.4, then reselect and save the currently signed-in ChatGPT account in the Codex official provider card.

Symptom

Section titled “Symptom”
Error output
账号不存在：`旧 UUID`
English translation

Account does not exist: `旧 UUID`

Cause

Section titled “Cause”

After a ChatGPT account is removed or added again in the authentication center, its local account ID changes. The Codex official provider remains bound to the old ID, so switching reports that the account does not exist. This issue was fixed in v3.20.4.

After upgrading, the old ID is not rebound automatically. Manually select the current account once in the relevant provider card and save it.

Fix

Section titled “Fix”

  1. Upgrade CC Switch to v3.20.4.

  2. In the Codex official provider card, click “Select account”, select the ChatGPT account currently signed in to the authentication center, and save.

  3. Switch to this provider again to confirm it works.

Affected Versions

Section titled “Affected Versions”
ToolCodex
Version3.20.3（受影响）；v3.20.4 已修复
PlatformsWindows

Source Issues

Section titled “Source Issues”

This page is distilled from 1 real issues

FAQ

Section titled “FAQ”
I have the same issue. How do I fix it?
After upgrading to v3.20.4, reselect and save the ChatGPT account currently signed in to the authentication center in the Codex official provider card.
Restoring my backup did not help.
Upgrade to v3.20.4 and manually reselect the current account; the old ID is not rebound automatically.
Section titled “Related problems”
<thinking> tags output as body text in Claude CodeChanging the provider's apiFormat from openai_chat to anthropic, if supported upstream, can bypass inline <thinking> leakage.1 issues mergedInvalid messages.content.type Parameter Claude CodeMost related issues remain unresolved. Upgrade to a version containing the #7656 fix so Chinese image-rejection errors trigger image fallback retries.1 issues mergedAfter switching, opening codex still uses the old account — CodexAfter switching OAuth accounts, fully restart the Codex background service. For CLI, run `codex app-server daemon stop`, then reopen Codex.1 issues merged

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