Codex Desktop cannot update an existing shared workspace plugin

ChatGPT Bugs
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Codex Desktop cannot update an existing shared workspace plugin — CREATE works, UPDATE returns 404

We have reproduced what appears to be a backend/API issue when updating an existing plugin shared from Codex Desktop to a ChatGPT Business workspace.

Creating a new share works correctly.

Updating that same share in place does not.

Clean reproduction:

  • CREATE plugin version 0.1.0 → works.

  • Install shared version → works.

  • Bump local plugin to 0.1.1.

  • Codex correctly detects that the shared version is outdated and shows Update.

  • Clicking Update fails before the bundle is uploaded:

POST /backend-api/public/plugins/workspace/upload-url

returns:

404 Not Found: {"detail":"Not found"}

  • Creating a brand-new share from the exact same 0.1.1 bundle succeeds immediately.

The important difference in the Codex client implementation appears to be:

  • CREATE calls workspace/upload-url without plugin_id.

  • UPDATE calls the same endpoint with the existing remotePluginId as plugin_id.

So authentication, workspace access and the plugin bundle itself are all known-good. The failure is specifically triggered by the in-place update path.

This has also been independently reproduced on several Codex Desktop versions and is being tracked in openai/codex #36929.

Has anyone successfully updated an existing shared Business/Enterprise workspace plugin while preserving its remote plugin ID?

It would also be useful if OpenAI could confirm whether workspace/upload-url currently supports plugin_id for in-place updates, or whether this client functionality was released ahead of the corresponding backend support.