ChatGPT（Codex）Desktop Installation and TreeRouter Configuration

1. Prerequisites

Before you begin, make sure that:

You have a working TreeRouter account.

Codex Desktop is installed or ready to be installed.

CC Switch is installed or ready to be installed.

Your network can access https://treerouter.com/.

2. Install Codex Desktop

Open the ChatGPT（Codex）installation page in the Microsoft Store:

Download Codex from the Microsoft Store

On the page, click Download and follow the system prompts to complete the installation.

Downloading Codex Desktop from the Microsoft Store

3. Install CC Switch

Follow the official TreeRouter guide to install CC Switch:

CC Switch Installation Guide

After installation, confirm that CC Switch opens normally. When you import the configuration later, your browser will attempt to open CC Switch.

4. Create a Token for Codex

Open the TreeRouter website and sign in:

https://treerouter.com/

After signing in, select Console > Token Management > Add Token.

Opening Token Management and adding a token

Enter the following information on the token creation page:

Name: Enter an easily recognizable name, such as Codex Token.

Token Group: Select the group you want to use with Codex. The screenshot uses the Gpt-codex group, which contains the Gpt-5.5 model.

Quota Settings: Set a quota based on your requirements. Leave the default settings if no quota restriction is needed.

Access Restrictions: Leave the default settings unless you have specific network access requirements.

After confirming the information, click Submit.

5. Open the CC Switch Configuration Import

After the token is created, the token list will appear.

Find the token you just created. Open the Chat drop-down menu on the right side of that token's row, then select CC Switch.

Complete the following steps in the configuration import window:

Select Codex as the application type.

Under Primary Model, select the model you want to use, such as gpt-5.5.

Click Open CC Switch.

Selecting the Codex application and primary model

After you click Open CC Switch, your browser may ask for permission to open an external application. Allow the browser to open CC Switch.

6. Import and Enable the Configuration

After CC Switch opens, it displays the provider configuration to be imported. Confirm that the application type, website URL, API endpoint, model, and other details are correct, then click Import.

Importing the Codex provider configuration into CC Switch

After the import succeeds, find the newly imported configuration in the CC Switch provider list, such as My Codex, and click Enable.

Enabling the imported Codex configuration

After enabling it, click the Connectivity Test button on the right side of the configuration.

If Connection Successful appears at the top of the page, the CC Switch configuration is working.

7. Verify Codex Desktop

Open Codex Desktop, create or open a conversation, and send a test message.

If the model responds normally, Codex Desktop has been configured successfully.

Testing the configured model in Codex Desktop

8. Troubleshooting

Nothing Happens After Clicking Open CC Switch

Make sure that CC Switch is installed and starts normally. If your browser blocks the request to open an external application, select the option that allows it to open CC Switch.

The Connectivity Test Fails After Import

Check the following:

The TreeRouter token is enabled.

The selected model is available in the token group.

The configuration is enabled in CC Switch.

Your network can access https://treerouter.com/.

Codex Desktop Does Not Respond

Make sure that the imported Codex configuration is currently enabled in CC Switch, then run the Connectivity Test again. After the test succeeds, return to Codex Desktop and send the message again.

ChatGPT（Codex）Desktop Installation and TreeRouter Configuration

1. Prerequisites#

2. Install Codex Desktop#

3. Install CC Switch#

4. Create a Token for Codex#

5. Open the CC Switch Configuration Import#

6. Import and Enable the Configuration#

7. Verify Codex Desktop#

8. Troubleshooting#

Nothing Happens After Clicking Open CC Switch#

The Connectivity Test Fails After Import#

Codex Desktop Does Not Respond#