[BUG] Invalide Autorization

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

Title:
[BUG] Claude Code Desktop login fails with "Invalid Authorization" on Windows

Preflight Checklist:

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report
• [x] I am using the latest version of Claude Code

Environment:

• OS: Windows 10 22H2 x64
• Claude Code Desktop version: [obtenir avec: où la fenêtre CCD affiche la version]
• Installation method: Native installer
• Account types tested: Pro, Free, no account

Bug Description:
All authentication attempts fail immediately with "Invalid Authorization" error (red text) in Claude Code Desktop.

Steps to Reproduce:

1. Launch Claude Code Desktop
2. Attempt login with any method (email, Google, API key)
3. Error appears: "Invalid Authorization"

What I've Tested:

• 2 different Windows 10 PCs
• 2 different networks
• Multiple email addresses (different domains)
• All account types (Pro, Free, new accounts)
• CLI command claude config set apiKey returns same "Invalid a..." error
• All fail identically

Expected behavior:
Authentication succeeds as it did a few hours ago

Actual behavior:
"Invalid Authorization" error on all authentication attempts

Additional context:

• claude.ai web works normally with same accounts
• Last successful CCD login: few hours ago (3 Feb 2026)
• Issue started suddenly without any changes to local configuration
• Both CCD GUI and CLI affected

What Should Happen?

Invalide Autorization

Error Messages/Logs

Invalide Autorization

Steps to Reproduce

Try launch "claude setup.exe" or "claude.exe"

Claude Model

Not sure / Multiple models

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

1.1.1520

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

PowerShell

Additional Information

_No response_