Issue Station
Sign In
Tools hereToolbox

claude-code - 💡(How to fix) Fix [BUG] Cowork fails with "Claude Code process exited with code 1" after app update on macOS Tahoe 26.4.1 (M4 Pro) [2 comments, 2 participants]

Official PRs (…)
ON THIS PAGE

Recommended Tools

×6

Utilities matched from this issue’s tags and category — try them while you read without losing context.

GitHub issue graph ai analysis

Paste a GitHub issue URL. We fetch that issue, discover linked issues from bodies/comments/timeline, collect linked pull requests, and produce a structured English report.

The report is written in English Markdown for sharing and archival.

Helpful · Quick feedback

Loading…
GitHub stats
anthropics/claude-code#49416•Fetched 2026-04-17 08:41:48
View on GitHub
Comments
2
Participants
2
Timeline
12
Reactions
0
Author
gopalsonigopalsoni
Participants
claude[bot]claude[bot]gopalsonigopalsoni
Timeline (top)
labeled ×4cross-referenced ×3commented ×2closed ×1

Error Message

Cowork fails immediately with the error "Claude Code process exited with code 1" on every task I try to run. Regular Claude chat works perfectly — only Cowork is affected.

Error Messages/Logs

  1. Observe: immediate error "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?

Cowork fails immediately with the error "Claude Code process exited with code 1" on every task I try to run. Regular Claude chat works perfectly — only Cowork is affected.

The issue started today (April 16, 2026), immediately after installing the latest Claude Desktop app update. Cowork was working fine before the update.

Scope:

  • ✅ Regular Claude chat: working fine
  • ❌ Cowork: fails immediately with exit code 1 on every task

Environment:

  • Machine: MacBook with Apple M4 Pro
  • macOS version: Tahoe 26.4.1
  • Claude Desktop version: Claude 1.3036.0 (cf521c) 2026-04-16T16:17:33.000Z

Steps already tried (none resolved the issue):

  1. Restarted laptop
  2. Signed out and signed back in
  3. Started fresh tasks (not resuming old ones)
  4. Full app reinstall (deleted app, downloaded fresh from claude.ai)
  5. Deleted ~/Library/Application Support/Claude/ and related Cowork/sandbox folders
  6. Cleared ~/Library/Caches/ entries for Claude/Anthropic
  7. Still fails immediately with exit code 1 after every attempt

Additional note: Since regular chat works fine and the issue appeared right after the update, this looks like a regression in the Cowork sandbox/VM component in the latest release.

What Should Happen?

Cowork task should start and run normally, as it did before today's app update.

Error Messages/Logs

Steps to Reproduce

  1. Open Claude Desktop (latest version) on macOS Tahoe 26.4.1, M4 Pro
  2. Switch to Cowork
  3. Start any new task
  4. Observe: immediate error "Claude Code process exited with code 1"
<img width="374" height="159" alt="Image" src="https://github.com/user-attachments/assets/6419ec3c-11b6-445e-9f5a-ca1e296a58a4" />

Claude Model

Opus

Is this a regression?

Yes, this worked in a previous version

Last Working Version

not sure the version but just before latest version

Claude Code Version

Claude 1.3036.0 (cf521c) 2026-04-16T16:17:33.000Z

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

No response

extent analysis

TL;DR

The issue is likely a regression in the Cowork sandbox/VM component introduced in the latest Claude Desktop app update, and a potential fix could involve reverting to a previous version or waiting for a patch.

Guidance

  • Verify that the issue persists across different tasks and Cowork configurations to rule out task-specific problems.
  • Check the Claude Desktop app's release notes or changelog for any mentions of changes to the Cowork sandbox/VM component that could be related to the issue.
  • Consider reaching out to the Anthropic support team or waiting for a potential patch, as the issue appears to be a regression introduced in the latest update.
  • If possible, try to identify the previous working version of the Claude Desktop app to see if reverting to that version resolves the issue.

Notes

The lack of error messages or logs in the provided issue makes it difficult to pinpoint the exact cause of the problem. The fact that regular Claude chat works fine and the issue only affects Cowork suggests that the problem is specific to the Cowork component.

Recommendation

Apply workaround: Wait for a potential patch or update from the Anthropic team, as the issue appears to be a regression introduced in the latest update.

Vote matrix · Quick signals

Works
Did the solution work? Tap to confirm.
Easy Fix
Was it a quick fix?
Time Saver
Did it save you time?
Blocking
Was it severely blocking?
Common Issue
Are others likely hitting this too?
Flaky / Intermittent
Is it intermittent?
Verified / Reproducible
Can you reproduce it reliably?
Loading…
#api#prompt template#agent execution#callback error#memory management

Still need to ship something?

×6

Another batch ranked right after the header list — different links, same matching logic.

Back to top recommendations

TRENDING

claude-code - 💡(How to fix) Fix [BUG] Cowork fails with "Claude Code process exited with code 1" after app update on macOS Tahoe 26.4.1 (M4 Pro) [2 comments, 2 participants]