[BUG] New Claude Code sessions hang indefinitely - existing sessions work fine

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?

Environment

• Claude Code version: 2.1.20
• Node.js version: v18.20.8
• OS: Linux (Ubuntu, kernel 5.4.0-150-generic)
• Installation method: Tried both native binary and npm

## Problem
New Claude Code sessions hang indefinitely during initialization. Existing/already-open sessions
continue to work fine. This issue started approximately 12-15 hours ago.

## What works

• claude --version
• claude --help
• claude auth --help
• claude config --help
• Existing terminal sessions that were opened before the issue started

## What hangs

• claude (interactive mode)
• claude auth login
• claude auth logout
• claude auth status
• claude update
• claude --resume <session-id>
• echo "hello" | claude --print

## Debug log output
Failed to check enabledPlatforms: TypeError: lK is not a function
[init] configureGlobalMTLS starting
[init] configureGlobalMTLS complete
[init] configureGlobalAgents starting
[init] configureGlobalAgents complete
(Hangs after this point)

## What I've tried

1. Fresh install via curl -fsSL https://claude.ai/install.sh | sh - still hangs
2. Fresh install via npm install -g @anthropic-ai/claude-code - still hangs
3. Completely removed ~/.claude and ~/.local/share/claude - still hangs
4. Removed plugins, skills, commands directories - still hangs
5. Minimal settings.json - still hangs
6. Different terminal settings (TERM=dumb, NO_COLOR=1) - still hangs
7. Clean bash environment (bash --norc --noprofile) - still hangs
8. Running from different directories - still hangs
9. --resume with existing session ID - still hangs

## Additional context

• Other users on the same server can start new Claude sessions without issues
• Same Node.js version as working users
• Network connectivity to api.anthropic.com is fine (verified with curl)
• API responds correctly (tested with curl)
• No proxy or special environment variables set
• Enterprise/team account

## Workaround
Keeping existing terminal sessions open - they continue to function normally.

What Should Happen?

claude cli should open just fine at terminal.
previously opened claude cli works fine.

Error Messages/Logs

Steps to Reproduce

at terminal

claude , it then hangs.

What hangs

• claude (interactive mode)
• claude auth login
• claude auth logout
• claude auth status
• claude update
• claude --resume <session-id>
• echo "hello" | claude --print

Claude Model

None

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.20 (Claude Code)

Platform

Anthropic API

Operating System

Ubuntu/Debian Linux

Terminal/Shell

Terminal.app (macOS)

Additional Information

same thing happens at vs code