Claude Desktop + DeepSeek-V4 Complete Tutorial: One-Click Setup with CC Desktop Switch (2026 Latest) ​

Compatible versions: Claude Desktop (Windows/Mac)
Keywords: Claude Cowork configuration, Claude Desktop third-party model integration, CC Desktop Switch, DeepSeek-V4 Claude Desktop

Claude Desktop does not natively support third-party models, but through the CC Desktop Switch local proxy bridge, you can easily connect DeepSeek-V4, Claude Cowork, and other models. This article provides the most detailed all-in-one tutorial, from download and install to troubleshooting common issues, with screenshots for every step — helping you quickly complete your Claude Desktop DeepSeek setup.

Why read this article: Many users hit the "URL not switched to 127.0.0.1" problem during Claude Cowork configuration. This article devotes an entire section to solving this high-frequency pitfall.

📑 Table of Contents (Click to Jump) ​

• Prerequisites
• Step 1: Install Claude Desktop
• Step 2: Fully Quit Claude Desktop
• Step 3: Configure DeepSeek-V4 with CC Desktop Switch
  • 3.1 Add the DeepSeek Provider
  • 3.2 Enter the DeepSeek API Key
  • 3.3 Enable Local Routing and Take Over Claude Desktop
• Step 4: Verify Configuration and Troubleshoot
  • 4.1 Normal Case
  • 4.2 Common Issue: CC Switch Takeover Not Working (URL Still the Official Address)
• FAQ: Common Claude Desktop Third-Party Model Setup Questions
• Summary

Prerequisites

Before starting the Claude Desktop + DeepSeek configuration, prepare the following:

• DeepSeek API Key: Create one for free at the DeepSeek official platform
• Latest Claude Desktop installer: Download the Windows or Mac version from the Claude official site

Step 1: Install Claude Desktop

After downloading, run the installer and follow the prompts. On first launch after installation, click Get Started to enter the main interface.

Step 2: Fully Quit Claude Desktop

⚠️ Important: Before configuring CC Desktop Switch, you must fully quit Claude Desktop, or the configuration won't take effect.

Right-click the Claude icon in the system tray and select "Quit", or end all Claude-related processes in Task Manager.

Step 3: Configure DeepSeek-V4 with CC Desktop Switch

CC Desktop Switch is the core tool for achieving Claude Cowork configuration. It seamlessly connects third-party models like DeepSeek to Claude Desktop through a local proxy (127.0.0.1).

3.1 Add the DeepSeek Provider

Open CC Desktop Switch, find DeepSeek in the provider list, and add it.

3.2 Enter the DeepSeek API Key

Enter the API Key you obtained from the DeepSeek platform; leave all other parameters at their defaults.

3.3 Enable Local Routing and Take Over Claude Desktop

Select DeepSeek and click Start, then open the settings menu in the top-left corner of CC Desktop Switch and turn on the "Claude Routing" switch.

Step 4: Verify Configuration and Troubleshoot

4.1 Normal Case

Restart Claude Desktop, and you should see DeepSeek-V4 in the model selection menu, with the URL showing the local 127.0.0.1.

4.2 Common Issue: CC Switch Takeover Not Working (URL Still the Official Address)

This is the most common cause of Claude Cowork configuration failure.

Symptoms: The model URL still shows api.deepseek.com instead of 127.0.0.1.

Solutions (recommended):

1. Open Windows Settings → search for "Claude"
2. Click "Advanced options" → Reset Claude Desktop
3. After the reset, reopen it and you should see the correct local address

FAQ: Common Claude Desktop Third-Party Model Setup Questions

Q: Is configuring Claude Desktop the same as Claude Code?
No. Claude Desktop requires CC Desktop Switch for local routing takeover, while the Claude Code CLI switches via command line.

Q: Does CC Desktop Switch support other models?
Yes. It supports DeepSeek, Qwen, Tongyi Qianwen, Grok, and other third-party models; the steps are basically the same.

Q: How do Mac users do it?
The overall process is the same. When resetting, you can clean up configuration files under ~/Library/Application Support/Claude/, or simply delete and reinstall.

Q: Do I need to reconfigure to switch back to Claude's official models?
No. CC Desktop Switch only takes over third-party model routing; official Claude models are unaffected and can be switched back anytime.

Summary

Configuration complete! You can now enjoy DeepSeek-V4 in Claude Desktop with faster speed and lower cost.