Regression in 26.715.72359: Automatic approval broken for all GPT-5 models (Microsoft Store) #34967

What version of the Codex App are you using (From “About Codex” dialog)?

26.715.72359

What subscription do you have?

ChatGPT Plus

What platform is your computer?

Microsoft Windows NT 10.0.26200.0 x64

What issue are you seeing?

After updating Codex Desktop to version 26.715.72359, Automatic approval stopped working completely.

Every request requiring automatic approval fails immediately with:

This model is not supported when using X-OpenAI-Internal-Codex-Responses-Lite

I tested multiple models:

• GPT-5.4
• GPT-5.5
• GPT-5.6 Sol
• GPT-5.6 Terra
• GPT-5.6 Luna

All fail with the same error.

Switching to "Ask for approval" works normally.

This issue started immediately after updating to 26.715.72359. The exact same workflows worked correctly before the update.

This is not related to my project or my code. It happens in every project requiring network approval.

What steps can reproduce the bug?

1. Install Codex Desktop 26.715.72359 from the Microsoft Store.
2. Open any trusted project.
3. Enable "Automatic approval".
4. Select GPT-5.4, GPT-5.5 or any GPT-5.6 model.
5. Ask Codex to perform an action requiring network access (for example an HTTP request, API call, or package installation).

Result:

Automatic approval fails immediately with:

This model is not supported when using X-OpenAI-Internal-Codex-Responses-Lite

Additional tests performed:

• Restarted Codex
• Switched between all GPT-5 models
• Edited ~/.codex/models_cache.json (use_responses_lite=false)
• Tried making the cache read-only
• Created a custom model catalog

None of these solved the issue because the cache is regenerated automatically.

What is the expected behavior?

Automatic approval should work exactly as it did before version 26.715.72359.

When Codex needs network access, the automatic approval review should succeed and allow the task to continue without requiring manual intervention.

No X-OpenAI-Internal-Codex-Responses-Lite compatibility error should occur.

Additional information

Environment

• Codex Desktop
• Version: 26.715.72359
• Installed from Microsoft Store
• Windows 11
• ChatGPT Plus

Impact

This is a critical regression.

I use Codex Desktop professionally with autonomous coding workflows.

Many of my routines perform dozens (sometimes hundreds) of network operations.

Automatic approval is an essential feature.

Because every network request now requires manual approval, these workflows are no longer usable.

The application worked correctly before updating to version 26.715.72359.

Several GitHub issues mention X-OpenAI-Internal-Codex-Responses-Lite, but in my case every GPT-5 model is affected (5.4, 5.5, 5.6 Sol, Terra and Luna).