[BUG] Authentication Service Down Globally

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?

Unable to work in Claude App Code.

Keep getting message Authentication service was unavailable.

Happening globally across a distributed team. No OS of version pattern detected.

What Should Happen?

Someone check the status of your infrastructure from outside.

Error Messages/Logs

Authentication service was unavailable. You can try again. (×8)

Steps to Reproduce

Try to open Claude App from outside the Anthropic walls.

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

Claude 1.30096.5 (6e1346) 2026-08-14T21:58:49.000Z

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_