[BUG] The api.anthropic.com/authorize endpoint is broken and redirecting all Microsoft-365 MCP auth requests to a dead Google Drive page.

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?

<img width="1532" height="1104" alt="Image" src="https://github.com/user-attachments/assets/5c4fa3fa-249e-47c9-93bf-e95cc009909f" />

<img width="2732" height="494" alt="Image" src="https://github.com/user-attachments/assets/c5fc7f66-b9ed-4f46-91f9-b4f70ce2df6e" />

What Should Happen?

It s should connect

Error Messages/Logs

Steps to Reproduce

See above

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

Claude Code 2.1.175.

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_