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claude-code - 💡(How to fix) Fix [BUG] Cowork crashes with "Claude Code process exited with code 1" on macOS — persists after full reinstall [3 comments, 4 participants]

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anthropics/claude-code#49470•Fetched 2026-04-17 08:40:16
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makyuz3makyuz3
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Akiraxiii-codeAkiraxiii-codeclaude[bot]claude[bot]makyuz3makyuz3salamitunssalamituns
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Error Message

Issue: Every Cowork session crashes immediately with "Claude Code process exited with code 1". New conversations give the same error.

Error Messages/Logs

  1. Error appears immediately: "Claude Code process exited with code 1"
  2. Clicking "Try again" gives the same error

Code Example

Claude Code process exited with code 1
RAW_BUFFERClick to expand / collapse

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?

macOS, Apple Silicon (MacBook Pro) Claude Desktop: latest version, freshly reinstalled Claude Code: latest version via npm

Issue: Every Cowork session crashes immediately with "Claude Code process exited with code 1". New conversations give the same error.

Steps already taken:

  • claude auth logout / login
  • Deleted ~/.claude.json and ~/.claude/
  • Unset ANTHROPIC_API_KEY
  • sudo npm update -g @anthropic-ai/claude-code
  • Full uninstall (including 26.9 GB VM data) and clean reinstall
  • Tried multiple new conversations

Nothing worked. The CLI works fine in terminal. Only Cowork is broken.

What Should Happen?

Cowork should start a session and respond to prompts normally, as it did before.

Error Messages/Logs

Claude Code process exited with code 1

Steps to Reproduce

  1. Open Claude Desktop on macOS (Apple Silicon, MacBook Pro)
  2. Open Cowork tab
  3. Start any new conversation
  4. Error appears immediately: "Claude Code process exited with code 1"
  5. Clicking "Try again" gives the same error

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

2.1.111 (Claude Code)

Claude Code Version

2.1.111 (Claude Code)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

No response

extent analysis

TL;DR

Downgrade Claude Code to version 2.1.111 or earlier, as the issue appears to be a regression introduced in a later version.

Guidance

  • Verify that the issue is indeed a regression by checking the version history of Claude Code and confirming that version 2.1.111 worked as expected.
  • Try downgrading Claude Code to version 2.1.111 using npm by running the command npm install @anthropic-ai/[email protected].
  • If downgrading is not possible or does not resolve the issue, try resetting the Claude Code configuration by deleting the ~/.claude.json and ~/.claude/ directories again.
  • Test the Cowork feature after downgrading or resetting the configuration to see if the issue is resolved.

Example

No code snippet is provided as it is not necessary for this issue.

Notes

The issue may be specific to the Apple Silicon (MacBook Pro) architecture or the latest version of Claude Code, so further investigation may be needed to determine the root cause.

Recommendation

Apply workaround: Downgrade to version 2.1.111, as it is confirmed to be the last working version. This is a temporary solution until the regression is fixed in a future version of Claude Code.

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claude-code - 💡(How to fix) Fix [BUG] Cowork crashes with "Claude Code process exited with code 1" on macOS — persists after full reinstall [3 comments, 4 participants]