OAuth token expires when using Claude Code on multiple devices

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?

When using Claude Code on two different computers with the same Claude Max account, logging in on one device immediately invalidates the OAuth token on the other device. This forces me to run /login every time I switch between devices, even if the token hasn't technically expired.

What Should Happen?

Users should be able to maintain active sessions on multiple devices simultaneously. Logging in on Device B should not invalidate the token on Device A. Most modern services support multiple concurrent sessions per account.

Error Messages/Logs

API Error: 401
{"type":"error","error":{"type":"authentication_error","message":"OAuth token has expired. Please obtain a new token or refresh your existing token."},"request_id":"req_011CXQ46Lk62sidviQWpEDTU"} · Please run /login

Steps to Reproduce

Install Claude Code on two different computers (Device A and Device B)
Run /login on Device A - works fine
Run /login on Device B - works fine
Go back to Device A and run any command
Device A now shows 401 authentication error requiring /login again
Run /login on Device A
Go back to Device B - same error occurs
This cycle repeats indefinitely when switching devices

Claude Model

Opus

Is this a regression?

I don't know

Last Working Version

N/A

Claude Code Version

v2.1.14

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_