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claude-code - 💡(How to fix) Fix [BUG] Cowork crashes after 11 seconds on ARM64 Windows (Snapdragon X Elite) - Error 3221225477 [3 comments, 2 participants]

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anthropics/claude-code#58891•Fetched 2026-05-14 03:36:50
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Error Message

Exact Error Message • Error code: 3221225477 • Error text: "write EOF"

Error Messages/Logs

I can't get through setting up cowork via /setup-cowork because it crashes and gives me this error

Root Cause

I can't get through setting up cowork via /setup-cowork because it crashes and gives me this error

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Preflight Checklist

  • I have searched existing issues and this hasn't been reported yet
  • This is a single bug report (please file separate reports for different bugs)
  • I am using the latest version of Claude Code

What's Wrong?

Body of the report:

System Information • Desktop app version: 1.7196.0 • Operating system: Windows 11 Pro • Processor: Dell XPS with Snapdragon X Elite ARM64 Exact Error Message • Error code: 3221225477 • Error text: "write EOF" • Note that crash occurs in Claude Code child process Steps to Reproduce • Start any Cowork session • Crash occurs consistently at approximately 11 seconds What You've Already Tried • Full reinstall • Verified Hyper-V and virtualization settings • Confirmed on latest version

What Should Happen?

Claude Cowork should work. I can't get past setup-cowork

Error Messages/Logs

Steps to Reproduce

I can't get through setting up cowork via /setup-cowork because it crashes and gives me this error

Claude Model

None

Is this a regression?

I don't know

Last Working Version

No response

Claude Code Version

Desktop app version: 1.7196.0

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Windows Terminal

Additional Information

No response

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#api#API middleware#SSR setup#ISR setup#authentication setup

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claude-code - 💡(How to fix) Fix [BUG] Cowork crashes after 11 seconds on ARM64 Windows (Snapdragon X Elite) - Error 3221225477 [3 comments, 2 participants]