Claude Code shows "Credit balance too low" despite active Pro subscription with low session usage

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:
OS: Windows
Claude Code version: latest (just reinstalled via npm install -g @anthropic-ai/claude-code@latest)
Plan: Pro (individual subscription)

Claude Code consistently shows the error: Credit balance too low · Add funds: https://platform.claude.com/settings/billing

Claude Code appears stuck referencing API billing/credit balance instead of my Pro subscription, blocking all usage despite the Pro plan showing low usage and active status.This appears even though my Pro plan session usage shows only 2% used (per /status in the app / claude.ai billing page), well within limits.

What Should Happen?

Claude Code should recognize my active Pro subscription and use my included session usage, rather than referencing an API/Console credit balance.

Error Messages/Logs

npm install -g @anthropic-ai/claude-code@latest
npm error code EBUSY
npm error syscall copyfile
npm error path C:\Users\irinb\AppData\Roaming\npm\node_modules\@anthropic-ai\claude-code\bin\claude.exe
npm error dest C:\Users\irinb\AppData\Roaming\npm\node_modules\@anthropic-ai\.claude-code-vifya26S\bin\claude.exe
npm error errno -4082
npm error EBUSY: resource busy or locked, copyfile 'C:\Users\irinb\AppData\Roaming\npm\node_modules\@anthropic-ai\claude-code\bin\claude.exe' -> 'C:\Users\irinb\AppData\Roaming\npm\node_modules\@anthropic-ai\.claude-code-vifya26S\bin\claude.exe'
npm error A complete log of this run can be found in: C:\Users\irinb\AppData\Local\npm-cache\_logs\2026-08-27T15_02_43_381Z-debug-0.log
(base) PS C:\Users\irinb> tasklist | findstr claude
claude.exe                   17464 Console                    5    471,344 K
(base) PS C:\Users\irinb> taskkill /F /IM claude.exe
SUCCESS: The process "claude.exe" with PID 17464 has been terminated.
(base) PS C:\Users\irinb>
(base) PS C:\Users\irinb> tasklist | findstr node
(base) PS C:\Users\irinb> npm install -g @anthropic-ai/claude-code@latest

changed 2 packages in 4s

Steps to Reproduce

Checked ANTHROPIC_API_KEY environment variable — not set (echo $ANTHROPIC_API_KEY returns empty)
Ran claude logout and claude login — re-authenticated, issue persisted
Deleted cached credentials file and re-logged in — issue persisted
Killed locked claude.exe process and did a clean reinstall (npm install -g @anthropic-ai/claude-code@latest) — installed successfully, issue persisted after reinstall

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.247

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

VS Code integrated terminal

Additional Information

_No response_