[BUG] Cannot login to Claude Code CLI after updating to v2.0.30

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?

After updating code cli to 2.0.30 I haven't been able to login. All my attempts fail with an error message: "OAuth Request Failed / Internal server error". I am using a Windows OS computer. I have tried the issue in both CMD and PowerShell. I have a max plan.

<img width="2308" height="1095" alt="Image" src="https://github.com/user-attachments/assets/4e592c11-09cf-42e7-aabc-40306583912b" />

<img width="2552" height="1257" alt="Image" src="https://github.com/user-attachments/assets/ea1eb0c0-2c20-4f90-ab55-38090a2b967f" />

[Edit after a few hours:]

In some attempts I see the following screen but nothing happens when I click on the Authorize button.

<img width="1410" height="1337" alt="Image" src="https://github.com/user-attachments/assets/4f762d92-0999-4475-b30f-2a5571d2fcff" />

What Should Happen?

Login to claude cli with my subscription account.

Error Messages/Logs

about:blank:1 An iframe which has both allow-scripts and allow-same-origin for its sandbox attribute can escape its sandboxing.
authorize?code=true&client_id=9d1c250a-e61b-44d9-88ed-5944d1962f5e&response_type=code&redirect_uri=…:1 Unchecked runtime.lastError: Could not establish connection. Receiving end does not exist.
frame-modern.63ea965d.js:1 [Intercom] Launcher is disabled in settings or current page does not match display conditions
/v1/oauth/b1b3a304-7020-4f13-bf4b-efcd67fef0d1/authorize?client_id=9d1c250a-e61b-44d9-88ed-5944d1962f5e:1  Failed to load resource: the server responded with a status of 500 ()

Steps to Reproduce

1. Open a CMD or PowerShell terminal
2. Type claude (claude Code is already installed and updated to the latest version v2.0.30)
3. In Claude CLI type /login if login screen doesn't appear automatically
4. Select a mode (Dark Mode, Ligth Mode etc.)
5. Select : "1. Claude account with subscription · Pro, Max, Team, or Enterprise"
6. Login pages opens in the browser but I get an error at this point.

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

v.2.0.29

Claude Code Version

2.0.30 (Claude Code)

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Windows Terminal

Additional Information

_No response_